You can use a 20 gal long as the sump(i think 10 is just too smal, but maybe not for you)... you can drill the back or do an overflow box(I recommend drilling the back, provided it isn't tempered)... If you drill the back you can make your own overflow, and I would look into the Bean overflow system. you would use a small pump as the return.. maybe 300-450ph woul dbe enough, you could go higher if you'd like.
You can drill it yourself... the club has diamond bits to use that are able to be checked out by premium members... if your nervous, I"m sure we have a few experienced members who wouldn't mind helping you drill your holes.