Speakers first. Even if it means just buying the front three that you want right now, or even just a pair for that matter. Check out the Infinity P162, looks like quick google says $85 each at Crutchfield(?). 3x those for $255. Hm, not enough for a sub quite yet with receiver, so then I say entry level receiver at $300+, then 5x P162 ($425), for total of say about $800. One day, next year, get a sub worth having. JMO. Good luck.