Speaking of pads, the NECG Quick-mount Recoil Pad is something to consider:

http://www.newenglandcustomgun.com/

I have used these - they are very nice and have the option of being swapped out for ones of different lengths for the times you shoot in shirtsleeves rather than in winter clothing.

All this aside, when you get your new gun you may wish to shoot it as much as possible before worrying about recoil or changing the stock - you may come up with a vastly different conclusion about what you need or want. Don't assume you will need or want a pad.