Hey Kannan and Welcome to Audioholics,
Imo if you plan to move in only 8 months, I'd recommend keep off the whole purchase till you are moved or at least: Just get receiver and front/left speakers now to vastly improve sound from your TV i assume and the rest after you move.
Now , $600 for 7.1 and receiver isn't much at all, even at 2.0, but if you get refub Onkyo 507 for about $250, you'll have left with $350 to spent for speakers.
I believe you can find a pair of decent bookshelf's for this price.
Checkout guides and reviews on audioholics and most important listed to speakers yourself.