Hi Rik,
Hmm, close maybe, I know for sure the 1250 is all I need in the meantime as "light wind" setup, just used it today again in 8-12knots with a 6.0, crazy how that thing goes...Go for the 1000 Free for sure, I was using it earlier in the day with a touch more wind and 5.0, crazy range that setup. 800 might be a bit small, I guess 20knots needed for that for your weight probably?
I guess the 1500 has just a touch more power due to the area vs the Free 1250, you could keep the 1500 for now and then wait for the bigger sizes of the Free, those will come most likely in Spring 2023.