If there's just enough room to sign Curry, then I have a vision of what is happening.
We've got 15 players right now counting ICuz, 14 without. But since it's the summer we're not constrained to be down to 15 players. We have probably left just enough to match Curry on whatever offer sheet he gets. Because of the Arenas provision, any offer sheet to Curry has to fit into the MLE for the first year. Now, we don't have an MLE, but we have left what looks to be suspiciously close to an MLE-level slot in our salary cap. So, assuming somebody comes along and tenders Seth an offer sheet (let's say it goes about 5.5/6/11/11.5, to average 8.5/year) we can match and hit the salary cap. Then we call free agency more or less done, with nothing but a room exception left, sign our rookies to the permitted 120%, giving ICuz an unguaranteed minimum deal. THEN we start the trade season. Now that we've used our cap room and we're over the cap, we can trade Ben/Gay/Koufos for bigger contracts if we want. Or sign and trade. Or whatever. But assuming we've got a trade(s) lined up, they aren't going to happen until we've used up all our cap - which won't happen until July 7th at the earliest.
Right now the best thing we can hope for will be for Seth to get an offer sheet soon, so we can make a decision and get on to the trades portion of the offseason.