Last week of Prep

Hi everyone,
I'm scheduled to take the test on the 29th. I would appreciate some advice on what to do in the next 5-6 days. I am going to take the GMATPrep tests and the last PR CAT. I am also planning on finishing the Kap800 math. I'm working SCs from the 1000 SC doc. I've done some LSAT for the CR but it doesn't seem to help. My probability/perm/comb skills are not too good. Should i work on them? What else can i do?

My target score is 700+; I don't know if that's possible since my test scores don't look very promising. Here are the test scores in the order in which I took them:

Powerprep 2: 640 (beginning of prep)
Kaplan Online: 670
Kap CAT 1: 570
Kap CAT 2: 620
Kap CAT 3: 550
Kap CAT 4: 590
PR CAT1: 650
PR CAT2: 640
PR CAT 3: 690 (today)

What score do you think i can expect?

I would appreciate any comments.
Thanks..