Marek, I admire your dedication and out-of-the-box approach 😎
These are the typical conditions in our local spot:
As you can see, it's indeed quite light wind. It's doable with SB 1000, 115+, 1 m board, and 9+ m2 sails. Good pumping and consistent jibing are a must. My "wet" weight inc. harness, helmet, full Camelbak with 3 liters of hydration, and some spares, is also over 95 kg. But yes, it took lots of practice to be able to consistently foil in these sub 8 kt conditions.