Skills are a big problem since unless you blow a feat you can't get more skills as you increase in level, so automatic gain in skills as you level up is a must (this is predicated on the idea that I keep the standard 3.5 skill list):
Standard Skill Point Gain which equals number of class skills gained (and additional class skills with increase in level):
2 + Int Bonus skills (Gain an additional class skill at 6th, 12th, and 18th level). EXCEPTION: The wizard gains additional class skills at 2nd, 5th, 8th, 11th, 14th, 17th, and 20th levels.
4 + Int Bonus skills (Gain an additional class skill at 2nd, 4th, 8th, 10th, 12th, 14th, 18th, and 20th levels).
6 + Int Bonus skills (Gain an additional class skill at every even level except 10th level)
8 + Int Bonus skills (Gain an additional class skill at every even level)