How much are you willing to spend, and how much space do you have? If you have enough space (where the amps are going to be, as well as a larger room to listen in), you can get a more conventional size dedicated power amplifier (smaller dedicated power amps tend to be very expensive, or DIY kits). They're easy enough to find on eBay - just search for brands like NAD, Rotel, Quad, etc, plus "power amplifier." You can get a decent one for as low as $150, although I think Emotiva might have a good one for $299 or $399 (their site isn't loading right now so I can't check).
I have like $220 - $300 as my budget. And heres a picture of my space I can put it in. And as for my speakers I was planning on getting these monoprice studio speakers but while doing research i found these KRK Rokit 5" speakers. Oh and tell me about this Lepai LP-2020A+?
http://www.krksys.com/krk-studio-monitor-speakers/rokit/rokit-5.html#
http://www.monoprice.com/Product?c_id=115&cp_id=11504&cs_id=1150401&p_id=605500&seq=1&format=2