2x BFG GTX295 in 2-way SLi with MSI X58-Pro-E?

Hello and thank you in advance for helping me. I want to replace my Dell's Mini ATX MOBO with a standard ATX MOBO to go with my 900II ATX chassis. This Dell MOBO is restricting me from accomplishing many upgrades, such as SLi, OC, new cooler, etc. I am interested at the MSI ATX X58 Pro-E (LGA1366) to go with the i7-920 that I am running right now. What do you guys think about this MOBO? I am very interested in this one since it is standard ATX and carries certain specs like 6 RAM bays which I must have, 2-way SLi, and so forth. Is there a good reason why I shouldn't invest in this one. I will be purchasing this MOBO from Best Buy soon since I have a $200.00 credit from them. If you guys recommend someother MOBO from them, please let me know. Also, I have a BFG GTX295 running right now. Does this MOBO support quad if I decide to go with 2 GTX295 in 2-way SLi someday? I will sure appreciate any feedbacks regarding this before I make my purchase. Thanks again!
p.s. Which of the many versions of the Artic thermal compounds should I invest in?