At first glance that drawing looked more like the plans for a speed boat lmao,
Then I zoomed in
.... Whats with the 3 spell bars??
The the slots you need are not difficult to do in the mini inv in my latest UI the slots on that change 3 ways at the click of a button... only downside is you cant drop stuff on it but you can ativate / use click on whatever is in there and pull stuff out of it...
The rest of the stuff you need I dont see a problem with...... Well maybe just 1 where the hell is the hotbars??
EDIT
Shoot it just dawned on me the spell bars is the hotbars sorry .. i thought it might have been spell name , casting time and breath that you had in there