Not bad at all! You're not far from a 700. Thirty more points? Definitely doable.
One quick thought: yes, I think it's a great idea to use the GMATClub tests
to improve your quant score, but don't neglect the verbal entirely. To get to a 700 without improving the verbal, you'll need at least a 50, and that's a pretty tough score to get. (Check out the scoring charts at gmat-scores-83890.html
for more on this.)
An easier path might be to improve both your quant and verbal scores by a couple of points. Keep your SC skills fresh, keep running through official CR and RC questions, and supplement with LSAT CR
and RC if you need an extra challenge. I'm sure that you can improve on the 45 on the quant section... and I'd also be willing to bet that you could pull the verbal score up, too. If you improve both, you'll have some extra margin for error on your next attempt, and that's always a good thing.
Keep us posted, Enrique!
Helping students kick the GMAT in the nuts since 2002... www.gmatninja.com.