Hi OW. I weigh a smidgen more then you at 85KG and also have just downsized from a 10'6". I got myself a 9'5" Naish Mana and TOTALLY love the board. The mana is 32" wide and 163L.
I also demoed the smaller model 8'5" which I found a bit tippy and for me not that comfortable for cruising. My Mana works perfectly for cruising and for catching small mal type waves. I'm also sure it will go like a rocket in bigger point breaks, once I get a chance. It turns really nice and is just awesome fun.
Good luck and make sure you demo demo demo before buying