RE: Replace HS111
I think you plan sounds good.
I would look at the Carve 111, the S-Type 104 and the Kombat
106 for your higher wind board.
Even at your weight you could go down to about 95 liters and still be able to stand on the board when it' not moving, but it would not be easy.
If you want more info, just ask. There are some differences between these 3 boards, but all would work nicely for you , it just depends on which performance "features" you wish to focus on.
Hope this helps,