I would say if $1000 is your budget, forgo the sub and go 5.0 for now. For breakdown, something kind of like 25% each for L and R, 20% for center and 15% each for the surrounds. Since you're posting in the surround forum I assume you care about the surrounds for multichannel music, so I wouldn't go too cheapo with them.
I recommend Polk Audio for affordable/cheap speakers that sound pretty good. I got my set over a decade ago and despite not using the surrounds anymore due to space limitations of the house we live in now, I still like the main L/R speakers (they're large bookshelf speakers I guess) and the center channel. I got a sub more recently (well, 7 years ago) mostly for movies as I found my L/R speakers to give good enough bass for just music (and I do like my bass thankyouverymuch).
VIDEO: Epson 5040UB | EliteScreens AEON Edge Free 110" 16x9 CineWhite Screen | Sony 65X900A | Sony 55X900A
MEDIA: Oppo UDP 203 | Oppo BDP 103 | Apple TV | Amazon FireTV | Sony PS3
RECEIVER: Yamaha Aventage RX-A820
AUDIO: Polk RTi6 (front L/R), Polk CSi3 (center), Monitor Audio Shadow 25 (surround L/R)