Almost all of my perks are focused within Sneaking, Lockpicking, and Pickpocketry, because this is one of the very few builds that I have yet to finish.
One of the gems I'm missing is from the Thalmor Embassy.
My problem?
I haven't started up with the dragons yet, and have a fear of them absolutely wiping the floor with me because I haven't really thought ahead for dragon killing <.<
The question?
I'm wondering if it would be beneficial to invest five perks into Alteration in order to get the 30% magic resistance. Would that help me in my fight at all, or would it just be a waste of perks? If not alteration, I was probably going to invest more into Speech and Alchemy to round out my money-making abilities. I don't want to put too many perks into combat, smithing, or enchanting, because I've done all of that to death. Just want to know if, with the current build, would it be wise to get the magic resistance or should I just find some alternate means of doing this?
Opinions? Alternative advice would be beneficial.

And thanks for reminding me that the atronach stone exists...i completely forgot it was there, believe it or not! Thanks again!