Dude, there is no perfect combination, whatever works best for you based on your leg strength. Personally I think skidding is mostly technique. Yes going down to 48/17 will make it slightly easier, while also giving you 17 Skid Spots. Here is something for reference

http://www.bikeforums.net/showthread.php?t=468351

Short answer: Cogs are cheap try 48/17 if you don't like it you can change it out later.