everything aside, mining would be better to drop as its easier to lvl on another char. if you want to get rid of both and move on to something like BS/JC, enchanting really isnt that hard to lvl until you start getting above 375. so, you can easily put it on another char and farm lower lvl instances. when i picked it up, i lvled it pretty close to max with just a couple days work.

one thing i suggest is while you have mining, visit a profession lvling guide, find out what mats youll need to zerg your new prof, and then collect everything before you drop it. it takes awhile to gather everything (especially thorium...need approx 490 bars for BS and its hard as hell to find alot of), so start saving now.