Board speed through the water seems ok, suggesting the wing was 'enough'. Time to add some board pumping. Think of it as doing a 'crunch'. Pull the sail down and lift your feet off the board. the board should pick up speed. Repeat a few times. Then add a little 'ollie', where your front foot comes up first and then pushes down. You're close. Make sure you have a big foil, like Sabfoil 1250 (2400 cm^2). It's really good for light air beginner. When you finally 'take off', put it back down, immediately. Up down up down up down. Because otherwise you'll be jettisoned. Your goal should be to maximize the milli-seconds on-foil. As you gain experience, stay up longer until you're comfortable just 'staying up'. Good luck. How did the algorithm find you? Mystery of the universe.
I think it is a good board, when you have a small car or traveling, but in my opinion I would prefer a regular surfboard at any time possible, The reason is , it sticks to the water, and less controllable, but that is just my opinion. I only use the inflatable when I am in a small car.
Great job and nice control! Your videos always give me suspenseful anxiety! I keep waiting in anticipation for the lift off. I agree with you that you should have chosen the bigger wing. Great accomplishment either way!