Beautiful tree. Don’t tip any shoots now.
Add stakes to train the top 3 shoots to spread out and up.
These will be main scaffolds.
Tip the top 3 when they get longer and farther away from trunk, maybe after another flush.
Pull the lower side shoots away from trunk.
They get more light so grow faster, fattening the trunk.
In a year or 2 remove the side shoots.
It’s up to you how fat the trunk you like.
If you remove them now you’ll have an ugly tree with a chicken leg trunk.