Yes, MickPC is spot on with his recommendations. I'm the same height as you and 76Kg. Currently riding a Mark Richards Puffer 5. 5'10 at 34 L volume. I'm finding this a great board for everyday Gold Coast beachies. I could possibly even go a bit lower in volume but if you're coming off a 9'6 and being a bit heavier than me, you might want to go with the higher end of Mick's range or else you'll get frustrated missing waves. Also, unless you want to get up on the nose, don't get sucked into those round nose short hybrids. They'll just make duck diving harder. You want the width, thickness and volume under your chest and belly with a thinned out nose and tail. A bit of width in the tail will also help with catching waves. As you probably know, everything is a compromise. You gain a bit here and lose a bit there. It's trying to sort out the right set of compromises for you that counts and that changes over time. That's why most of us are on the never ending quest for the perfect board.

I'm not sure if MR has got a distributor on the Sunny coast but he has a wide range of "fish" style boards on his website.
markrichardssurfboards.com/