Re: Adjustable combs
Get some OD or black duct tape from your hardware store, and a couple of maxi-pads from a female friend or some foam pipe insulation, and tape a pad(s) on your stock until the height is where you want it. It might not be purty (unless you are really good at taping stuff), but it works good and you cannot beat the price.
Or, get a "stock pack" from one of the tactical stuff suppliers to put on your stock. You can boost the height under it with the pads or foam insulation. Looks more snipery to the untrained person than OD duct tape, but man....that OD tape rocks.
McMillan build stocks with adjustable cheekrests -- look at their website first to get an idea of the model you want, then call and discuss it with them. There ain't no free lunch doing this, it's an additional cost option, and adding the hardware adds weight to the stock. Consider an HTG (good all-around choice IMO), for your action and barrel contour.