Mages can do quite well, however they need more FG investing to perform at their peak. With the amount you have, you should be able to make a halfway decent one, I would recommend following Nev's guide found here:
http://forums.d2jsp.org/index.php?showtopic=30551054&f=74I have climbed twice using that guide, and have not had many problems.
A general rule of thumb: either add your first 10 to VIT, or go 5/5 VIT/INT, then the rest to INT. That way you will have some HP when it gets later in the game.
Intel on your weapon/armor, and a high EE damage and heal charm is the way to go. If you are in catacombs leveling, you can use Heal Mastery weapon/armor to help buff your heals.
Hope this helps, pm me any questions you have!