Okay - this is a huge thread so I haven't read it all! But I have a 36 gallon bow front - it is LOVELY - there is a pic on my profile of it (I have rearranged since - of course)... Anywho - this was my upgrade from a 10 gallon tank that I am fostering from my sister in law! Uh - I WISH I WOULD HAVE GONE UP BIGGER! LOL! So - if you can go bigger - GO BIG
I am going to be getting another tank 72-150 gallons this winter. I am loving the hobby that much. I want so many more and different fish it is nice to have more tanks so that you can have more variety of fish. So, that is an option too. Do a 36 (as I do LOVE mine) and then down the road add another.
I was looking at those German Blue Rams the other day actually - lovely fish - but I will not put them in a tank with my Angel and my Pearl Gourami. My 36 gallon seems to be in harmony not. Certainly NOT full, but in harmony. I took the 6 cherry barbs I had in there, OUT and put them with the Molly fish in the smaller tank for the time-being... The Pleco from my 36 gallon and the school of cherry barbs will be the base of my stocking for my big tank. It'll be interesting!
I personally would add your least territorial fish first so they can get established. And another thing I wish I had to do all over again - starting the tank properly with a fishless cycle. It was soooooo stressful starting a tank with even just 2 fish in there. I just didn't know before it was too late and it was a lot of work. Start it right. Be patient. No fish
So - my 2 cents: go bigger
And choose rams OR angels not both. And no neons with either of those or their name will be LUNCH.
Happy *Fishing*