So, it appears that you spin balance, leave the weights on and then insert the beads. I guess that will work though I have read that taking the weights off is the recommended way to do things. Personally, I don't see the harm in leaving the weights on when using the beads and evidently your method has worked well.
But, I am lazy. I have a static wheel balancer and it works well. It is just time consuming and I am always looking for a better way. So, I simply mount the tire aligning the paint mark, if there is one, with the valve stem. I air up the tire to seat the tire bead to the wheel. Then I let out the air and install the beads and I am finished. I suppose if I had spent the money for a spin balancer, I'd not be using the beads.