@ Juris
Those scores should be fine, I wouldn't worry about taking the SAT ever again. Your math score is most likely high enough to place you into whatever math you need, plus a lot of schools have math placement tests during their orientation programs in which you can place into a higher level of math if you need to. Your writing and verbal scores should be high enough to place you out of most if not all english, depending on how the school you're looking at gives credit. I'd say you're fine, just wait for your ACT to come back, and if it's lower than you wanted take that one again.
EDIT: oh yea, and as far as justifying paying to get above 2000, uh no. if you look up what certain schools accept as far as SAT scores are concerned and the school is listed as accepting 2000 and higher, unless it's some rediculously prestigious school, then i can gurrantee you that there are people in that school that scored less than 1800 on the SAT. schools will generally accept you, as long as you can pay...
once last piece of advice. i know it kind of goes against everything i've been saying but...i would find out two things from each of the schools you are applying to (this is just SAT stuff). do they give out any money based on SAT scores? and will they take your best sections from each time you took the SAT and add those together? i'm sure you are right there for any money if the school offers it, but one thing you might think about is the second question. if the answer is yes and they will take your best sections, then, if it will get you money or some other great oppurtunity i would look in to studying your ass off for the math section of the SAT and not worrying about the others. Your overall score might be lower, but if you could boost your math up to 650 or higher then your overall score with your best sections would look really good. if there aren't any monetary oppurtunities though, then screw it, your scores are good enough...oh yea and you're the first person i've ever heard of that's actually taken the subject tests, are the schools you're interested in requiring those?