i love how everybody thinks race bases are pillow soft and that rails will leave massive trenches in them.
You will be fine, just keep them waxed well and take care of them. I had a friend with park skis w/race bases that he didn't wax or take care of, and I cleaned them and put a fex sticks of P-Tex evenly underfoot and scraped them off and the skis were great. Not to mention race bases are way easier to repair than sintered, which don't hold P-Tex, and don't hold wax as well. still though if you are doing more than 50% rails probably get T-Halls. hope it helps