Hey i'm about the same weight - i started in the surf with a 9'6x29.75x4.75 and that was a really good board to learn on then went to a 8'6x31x4.75 which i really enjoy. I've tried the Mana 8'5 and really loved that too and other boards 8'11x29.25 etc.
The trade off is the glide and strength of women paddling against men on the waves imo. we have a lot of chop down our way and a lot of surfers and sups on 9'6-10' slabs that you are competing with for waves - so some days 8'6 is hard work as i tend to take off later, and paddling to outer breaks is a lot harder.
i've just bought a 9x30 board as a bit of a compromise, especially for choppy days.
anything over 9' foot will be easy and fun, 8'10 x 30/31 might be a good compromise to start with, especially with your experienced paddling background
Trial as many boards as you can - i trialed the Hokua 8'4 (i think) & is was too tippy on flat water and the Hokua 9'6 x 32 was huge