Yeah, go for a SSD for your boot/os drive.
Also, I would wait for the non-reference 290 cards. The 290's run very hot even though AMD says that is fine. You can mess with custom cooling, but I'd wait to see what the oem's come up with before shelling out extra cash for gpu cooling. Sure, you can clock the card down to operate at a temp you want, but why not get max performance AND cooler core temps without the hassle?! The 280X are out of reference now and are performing very well for the price point. Could always crossfire them down the road too.
S.