i assume you have an idex printer, right?
1) if you mean bypassing the movements to the print and directly go to the movements to reach the prime tower, this plugin is for that exactly
2) if i understand correctly, use this plugin and check the remove layer star x/y, then enable skirt or brim for your print, as there is a limitation in cura which will make it not prime the first extruder on the first layer unless skirt or brim is enabled
3) ooze shield should not be needed
nozzle wiping won't work, eventually it will just pick up stuff rather than depositing it, prime tower is the only way