Weight determines length of board. So at your range, you can ride anything from 155-165. I'd stay around 160cm-ish, cause once you get used to riding it even at 180lbs, you're still gonna be able to control it at 160lbs.
I'm 180ish and ride a 159.
If you're riding park, you want shorter.
Now what really should concern you is board width. Do you know what angles you ride? if it's rental, probably around 15/0 or so. I'd say at LEAST a 26mm wide board. If you have wider angles, you MIGHT be able to get away with high 25's, though with a 13 boot, I wouldnt try.
Rome has a wide one,
Arbor Roundhouse (though you should be experienced for this board, otherwise it will ride you
There's a lot of wide boards out there. Just look. And you won't have a problem finding a wide board in around the 160 length.