If you mean when to get a GTX 970, then some time late summer or early Autumn because I believe Pascal is being released at the end of May and lots of people will be selling their used 970s much cheaper on Ebay. I don't personally think that the prices will drop much for new cards (ie Amazon, Newegg), at least not enough for it to be worth the wait. So just grab a used one on Ebay from a seller who has a lot of good feedback. But for the CPU, you may as well get it now but you will have to buy a new motherboard for the Intel socket. If you want a Pascal card, then I don't think there will be a good one in your price range until late this year or next year.