Angle fish with zebra danios?

Question
HI (again)
I have a 30 gallon freshwater tank with 8 glofish (zebra danio) and an albino bristle nosed pleco, and 2 male german blue rams. I want to add a pair of angle fish, but i am scared that they will grow too large and prevent me from having any other fish, and possably eat my glofish. would this happen? do they have a large bio-load? if i got them, would i still be able to add other fish?

other fish i have been considering are:
Bosiman Rainbow
Parkinson Rainbow
3 or 4 dwarf gourami
paradise fish?

how would any of these do with angles? i do not want to overstock my tank, and i am not prepared to get a new larger tank to re-house the angles. should i still get them, or will they dominate my tank?

also, will bosiman and parkinson rainbows school together? would 2 of each be enough?

are paradise fish over aggressive for gouramis? i have reacerched but gotten mixed messages.

and my glofish wont school like i want them to, they all swim around the tank doing their own thing. is this normal? could i make them school by adding dither fish like cardinal tetras?

my main questions are, if i get angles, will i be able to add other fish, if so, what?

if i did not add angles, would i be able to get the other fish mentioned above, ore would they have conflict?


Thanks for answering my novice questions all the time, but i have looked at all the web pages i can find on these fish, and i am still not clear.

Thanks again,
Mike

Answer
Hi Mike,
Angel fish need at least 10 gallons of water each, so yes you would be limited in adding other fish.  Angel fish are cichlids, and are territorial.  If you add Angel fish to your tank, you could add neons, and 4 drawf gouramis, but this would be your limit.  Buy the angels small, the same size, and put them last into your tank.  The angels will not eat your glofish, or neons, but as they get bigger, they could eat any other neon you put into your tank.
The Bosemani Rainbow, and the Parkinson Rainbow must be kept in groups, and would need a longer tank to swim.  They grow to about 5 inches, and need lots of room to swim.  You would need a bigger tank.  The paradise fish is aggressive, does not do well in community tanks, and I would not recommend him in your tank.  Dwarf Gouramis are okay as long as you provide them with floating plants, and try to buy them the same sex.
I do not know why your glofish do not school, maybe adding a few more, or neons they will.
I hope this helps.
Lynda