Don't want to burst your bubble, maybe you'll have better luck. But I'm no fan of the fast n vast. Bought a three pack, one didn't germ. Dropped another in the summer and it was a dwarf, very good smoke, but the yield was 16g. Basically a waste to me. I just dropped the last bean a few weeks back, I have a dozen or so I'm running to finish out last year seeds. And, I'm probably going to cull it. I need the soil.
It's, three inches tall and already flowering,, as comparison, I have a Candy Kush and THC Bomb a bit older and if you saw them side by side you'd have a bad taste about autos.
Over the summer while I was growing the other one, someone on here has one going who was also disappointed with the size.
Just passing it on, wish you the best.