Gday Antonio!
Somehow, this one has slipped under my radar...
This has the makings of a really excellent Trident! Like you, I really appreciate Walter's take on the "broom" style, as well as his views on deadwood with deciduous species.
I look forward to seeing it once you start getting the roots sorted out - and it looks like you're already halfway there. Looking at the pic of you tree all wired up, the main thing that stick out to me is that lowest right hand branch: to me it acts as a "bar branch", making it difficult to find the flow of the tree. I would consider losing that branch, then cutting back the top of the right hand branch to encourage lower branching there.
Just my 2 cents worth.
Can't wait for the next installment!
Fly.