hey ec-rose i saw ur self intro, i think the stuff u play dont need more than 3 toms haha, but they definitely need the ride a lot so forsaking one or both toms to fit ur ride in would help... its good to practice on the standard 3 toms rather than 5 when ur learning so that u get more challenge to make more fill ins, and you can ezily adapt to drum sets at studios and gigs later on. 5 toms will come in when u learn to fully utilise the standard 3 toms set. when i was starting out a i was eying a 7 piece kit also but i thought btr start of with a 5 piece to get use to the standard set up. well thats how i feel and i think a few of u out there will agree too. hope this helps
cheers n welcome to soft