150lbs size 11s. Problem is that if you go to 152 you may just risk too much overhang and may need a wide, but the perfect midwide for you like and SL or Blacklist comes in 156 and 154 respectively, which at those lengths, you may not need a wide.
As such this leads me to recommend to you the NS Proto CTX 152. Now this is just an example, but this is a nice short board that has enough beef for you to take just about anywhere, and is the proper length and width for your height and feets.
Just make sure when considering other wide boards at short lengths to not get sucked into a noodely park board, as most of the options you find will lean to toward that bent.
Unless they changed it the SL comes in 151, 153, 155, 158, 161...
To the OP I'm 6'0 135-140 lbs, wear size 11 shoes but my boots are only 9's. I have the 155 SL and I think it would be a perfect size for what your trying to do, sometimes i wish mine was a little shorter to make bigger spins easier but really dont need it at all, plus I love the trees and just bombing down runs. If your boots are 11 I would bring them with you and see how they fit on the board but I think you should be fine.