You could add another 4 rainbows and another pleco (the kind is really up to you). I will deal with all the other fish separately:
glass cats - Need to be kept in groups of at least 4 but they tend to be very shy especially when kept with other big or fast fish. I have 4 myself in a 33 gallon and they are rapid - the fastest fish I have ever seen. So you shouldnt need to worry about them being eaten by any other fish on your list. Wonderful fish!
spotted raphael - these fish are nice too but I would be concerned about them going for your mollies.
African butterfly - I have one of these in my 33 gallon (so I can confirm that they definitely do work with glass catfish and also angelfish and dwarf gourami) and although they dont do much they are fascinating when you see them swim. If you are getting one of these though then you need to make sure you have a lid on top of your aquarium - these fish are expert jumpers.
congo tetra - Nice fish, you could keep them in a group of 6 or 10 - however, I would be worried about them being with your angelfish, they may fin-nip them. Perhaps you could choose another tetra species such as rosy tetras (I have rosy tetras in my 33 gallon too).
yoyo loach - Should be kept in a group of 3-4+ - however, again I would be worried about them fin-nipping the angels.
boesmans rainbow - Would look good too. You could get a group of these.
hillstream loach - would be nice, you could add 2 (or more) of those.
According to Aqadvisor, that puts you at 85% - here is the link so you can see everything roughly put together: http://www.aqadvisor.com/AquStockIma...:200909300097:
The only thing I would say though is to watch your temperature and pH levels - with those fish selections you would have to keep them pretty constant.
Also, since you are still only at 85%, you still have room for other fish - perhaps you could add some/all of the following:
- 5 peppered corydas
- 2 german blue rams
- 1 red tailed black shark
As for the African Tank in the 46 bow front, that sounds fun!! Please let us know what you decide.