I'm a bit heavier than you, I have a Formula 161 and an iSonic 125, I use the 161 when the winds are light but the iSonic and a 6.5 m2 with winds in the 20's and I have to say, it's a fantastic board. I'm roughly 175lbs and it planes quickly and so far I've not found the top end for speed although on my first day with it I hit over 31mph without even really trying. (GPS) I use an 8m2 with it as well but I find it doesn't handle quite as well. At any rate, not sure if I'm helping with your question, but thought I'd throw in my thoughts on my iSonic. The 76 might be a tad small, you would be better opting for the 111 if you think you'll be out on light days, it'll more than handle the 25kt ones, my 125 sure does..