So I'm another wet behind the ears newbie, finished my lessons last weekend... Thanks WestOz, amazing experience. Ended up buying some nice kit, but due to very strong winds (28-35kts) could not go out this week

I need some advice on a possible 2nd kite size:
I'm 98kg and will most probably be north of the river in Perth for most of the time. I am the proud owner of a 2015 Liquid Force Envy 12M with a 2014 Liquid Force Drive 140cm board. No real riding style yet, just trying to stay on for more than a couple of meters. I have some wakeboarding experience as well as other watersports. Also have 3 weeks leave as of next week, so wanted to give myself the best opportunity to kite and learn as much as possible.
What other kite size should I look at? Smaller - Envy 8 or 9M, or larger 15M Envy or Solo for now? I'd like to stick with Liquid Force to aid progression and use the same bar.
Please help.