Fax2u, i'm glad to hear that your system is getting closer and closer to the point when you will be 100% satisfied with it! Actually, you may be already there... If your system is working now, I would suggest you to start monitoring the temperatures - and post some results here too...
The thermal paste you have now may not be so bad... so, if you're temps are fine - you don't need to change it now...
Let us know the temps, and maybe would be a good idea to repost your system's specs (or just put it in your signature) - then we will see what's the best move! :cool: