Thanks for the compliment! We keep trying to keep these forums as the best!
In less than 10 knots, either you don't sail or you get the Formula board with a sail larger than 8.5 m2.
If you want to set your minimum at about 10 knots, at your weight, the Futura 133/8.5 m2 rig could be a good combo.
For your higher wind spots, the 104 ltr Synchro will be good to around 20 knots, but for much over 20 you'll need something a bit smaller (around 85-95 liters I'd suggest).
So, start out with a formula/Apollo/big Isonic for your home lake and then get something smaller and some smaller rigs for Baja etc.
Hope this helps,