[Will]

You may have to experiment with tire pressures to find what gives the best wear (most even). I tend to always be throwing my cars into the corners so run a fairly high pressure, usually within a few pounds of what the max. pressure listed on the sidewall of the tire is. Doing this keeps the wear more or less even, instead of just on the outsides. If you drive more tamely, you can get away with less pressure. I'd say 35 psi would be a good place to start.

White smoke? Oil smoke usually has a bluish cast to it. When do you see the smoke? By that I mean, under what conditions? When you first start the car or when you're driving it? if you're driving it, when does it typically appear? When you're accelerating or decelerating? It could certainly be caused by a bad valve seal or worn guide.

Head bolt torque should be the stock torque figure with just about any gasket. I can't remember off the top of my head what that is though, but I think 100 ft/lbs is about right. Check first to be sure, over or under-torquing the bolts could lead to head warpage, and certainly premature gasket failure.

Good luck!
-Will