Those Angels are pretty familiar with the cat. As he watches the community tank all day. But I will watch the situation and reassess once we move them.
I've hit a little speed bump. We tested the water with intent to move the pair tonight to find this:
A: 0.25
Ni: 1
Na: 90
I did a %40 water change, but now im thinking we should wait an other week? What do you think? The fighting is getting out of hand both of the "males" in each pair are getting their fins damaged.
Side note: once this pair is done breeding can they return to the community tank? Or can they stay in this 46 permanently? Once they are all done, do you think they will still be aggressive or can I add some other fish later? I realize I'm talking about years down the road.
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Okay, but here's something to consider: the fish may be used to the cat looking at them in the community tank where they have other issues they need to be concerned about as well but in a tank by themselves, and with them hopefully wanting to spawn, they are now the center of the cat's attention and a bigger distraction/ threat to their egg's safety. That's a whole different ball game.
For me, once a pair has formed, they should remain by themselves. I don't put breeding pairs back with other Angels because they will always be fighting for spawning rights. Even if I lose a member of a pair, I put a substitute fish in the breeder's tank not the other way around. I consider a breeding Angel as a lone fish for the rest of it's time. When the pair gets too old to breed, THEN you might be able to put them back into a community scenario but I would not suggest a community with other Angels.
Now, maybe I'm just "old school" but you seem to be making this move a lot more complicated than it needs to be. Steps to move the fish fast: 1) take an empty tank 2) fill it with water the fish are currently in so that when finished, the water is 80% tank water and 20% new water. ( This will be like doing a 20% water change for the fish) 3) install a sponge filter ( new, old, cycled, uncycled, it doesn't matter.) 4) if necessary, install a heater. Let the heater correct the temp then go to step 5. 5) Put the fish in the tank. 6) cover the tank. DONE!!!!!!
Obviously, the best way is to use a cycled sponge filter or one that has been in a running tank for some time but IF you are using an uncycled sponge, you will need to watch the ammonia level. Considering that there will only be 2 fish in the tank, the ammonia level should not rise drastically at a rapid pace. Since you won;t be doing heavy feeding and you will be doing water changes weekly, IF there is an ammonia issue, just use PRIME to detoxify the ammonia so it won;t really harm the fish even tho ammonia is present. (It's converted to ammonium which has less effect on the fish.) Considering that the majority of the water in the tank is from an established tank already, there will be, more than likely, some BB that will transfer over with the water to colonize the new sponge. You could even move a decoration ( which most likely has some BB on it) from the main tank into the new tank to help inoculate the sponge. Once you see that the sponge is established ( through water tests), you can remove the decoration to help keep the bottom of the tank clean for the fry.
As for the water, you don;t necessarily have to fill the new tank up all the way to the top the first day. There just needs to be enough water for the fish to swim in comfortably so if filling the new tank with the main tank's water means taking too much water out of the main tank, just take out enough water to again, be doing a 20% (max) water change in the main tank. If there is enough water in the new tank for the fish to go into it, you can then add some water to the new tank on a daily basis ( i.e. 1 gal of new water per day) until you fill up the tank. This way the change will be gradual. If you've ever seen some of the pics I've posted of my fish tanks, you will see magic marker marks on the sides of the glass. In the small tanks, they are marked at 5 gals then 1 gallon increments up to the top. In my larger tanks, they are marked every 5 gallons. I've taken fish and put them in a 30 long with only 10 gals of water and kept adding until the tank was full. It doesn't harm the fish to add slowly. It's just like a river that swells over the course of weeks instead of immediately.
Realistically, the water in the new tank should have 0 ammonia and 0 nitrites and possibly some nitrates because it's from the established tank. But you will be diluting the nitrates either by adding the water to fill the tank or by doing your weekly water changes. Control your feeding and you will control your water chemistry. There are only 2 fish in the tank. It's not hard.
Hope this helps
) Plus, you have to be careful not to spray anything with an aroma that the airpump can pick up and poison the water with. ( I can tell you a number of sad stories of airpumps indirectly killing tanks 
