When should SAT scores be sent to UCs?

<p>I know, this question has been asked before, but I haven't found any clear answers so I'll state my situation. I've finished all the testing I need, but i'm retaking two SAT IIs during the December test date. Is it still okay to wait until I get my scores back (Dec 17 or so) before sending to the UCs or should I send my scores right now (since it takes so long for the colleges to recieve them) and re-send if I improve?</p>