Don't just put RJ45's on, order a CAT5e patch panel and punch down tool from Deep Surplus. When it comes, sacrifice one of your patch cables and try it out a few times, it's not dificult but you'll get much better with a few practice goes. Mount the thing high enough to give you enough slack, and punch 'em down. Then you can use nice short disposable patch cables from the punch down block to the switch. You can tear up patch cables and make one that'll let you use the jack for phone if you want in the future.

The only issue that you want to be careful of is rewiring the jacks in the wall. If you've got enough slack when you take them out of the wall, cut the end off and punch them down again using the 568B guide that should be on the jack. If you don't have enough slack, you'll have to hope you can figure out a custom wiring pattern that keeps everything on the correct pairs.

Matthew