Well overall update: I have come to the conclusion that i almost made a huge mistake that i'm sure lots of people overlook. I was going to make the entire gantry move but based on what I have seen and been told fixing the gantry and having the table move adds an enormous amount of rigidity, which hopefully will add to overall accuracy.
My new debate is using linear rod rails with ball bearing blocks, or Hiwin rails and blocks.
Since i need 2 rails for each axis (6 total) and 2 blocks per rail (12 blocks) the hiwins make a huge dent in the wallet where as the Glacern machine tools SBR series is much lighter on the wallet and appear to be fully supported, and extremely well manufactured.
http://www.automation4less.com/linear.htm <===Hiwin rails
http://www.glacern.com/sbr <===Glacern supported rails.
any information regarding accuracy between the two would be appreciated, i dont plan to load anything heavy onto the table, maybe a aluminum plate that weighs 50 pounds if that, and if so rarely. Accuracy is what im more concered about, and if i can get by with the less expensive rail then that would make me happy.