You could step it down one notch from the Glide, although that would work, I think you could get away with a tad less and have more fun.

Something like a 135-140 by 44/45 is my guess.
Plenty of makers of boards in that size.

All boards have different rockers etc, but that's a ball park.
If it's for light wind, make sure it's moderately flat rocker.
A larger board would work for sure, but if it picked up a little, it might become cumbersome and not as much fun at your size.
Without saying this is "the board" (cuz tons of others exist), here is an example (in the 138 by 44 size).

I rode this once and it was really nice.

http://www.oceanextremesports.com/ca...rip-p-682.html

Other companies have similar sizes.