Dude! You are almost there! Practice the back roll separately, push backwards & you'll get the balance point very2 quickly. Start by holding the seat with your right hand & your left on the bar as in your vid, remember the photo I shared? Something like that, but both wheels on the ground. Don't go too slow coz it's way harder.
After that, try the same thing with both hands on the bar. When you got these, just link them with what you already did in the vid. I see that you are already kicking the wheel to roll, things will get together very soon!
Yes, finding your balance in the fork glide can be painful, key is your rolling speed; too slow just won't cut it, too fast and you hv tendency to fall backwards or end up lifting your bike's tail. When you turn, use your kick foot to help rotate & balance yourself on the peg. Like a ballet dancer? When they doing their ridiculous spins? Your axis is the steerer tube yeah?! Have fun!!