Hi guys!
Thanks for your replies.
I would aim to keep the smallest number of each possible,
Im thinking 3 corys, 3 kuhlis and 3-5 cherrys.
I'm trying to find an external filter, but its not easy doing things on the cheap (im a student

)
Thanks again for advice, you guys are very helpful.
I've decided against keeping dwarf cichlids, might as well keep it simple but interesting.
Going to add a few tetras too I think.
My main concern is that there would not be enough food available for so many 'bottom dwellers' .
But Ill invest in come cat fish food.
Cheers again.
Olly