It'sjaffabigdave, I don't think that board will be the go for you even if it's similar to what you were riding before, your muscle memory should come back but your will notice that your paddle fitness etc will be way down, but can only get better.
If you have a little cash I'd look at a bigger volumed board of bigger dimensions than what you were surfing before, because like all of us you are probably slightly bigger dimensions than you were before

I'm of similar weight but a little shorter and I'd find paddling that board difficult.
There are plenty of boards out there that are catering to surfers of our dimension and you don't have to go to a long board
if you are going to spend the time in the water, that's a great start but I think that board will just frustrate the heck out of you.
I ride as short boards a 7S 7'3" and and 8' Surftech G&S Magic fish, both epoxy extra float, other boards I've that may fit are Channel Islands Pod and Gravy and Rusty Dwarts quite a lot of good board brands have a weight and volume scale that helps too.