I started snowboarding 4 years ago with soft gears, am 50 years old

My end-of-season and e-bay purchases turned into:
F2 Speedster GTS 163 (I wish GTS stays for Grand Tourism Senior ....)
Head Vector
Phiocca PH200 (5mm bail)
I later found another pair of Phiocca PH200 on ebay and I thought it was a good idea to have a spare (it looks that you all are breaking bindings in dozens ... ).
Now my questions to you advanced carvers :
My two pairs of PH200 are different, one box is marked "highlander", the other "macho". Highlander bail fits tighter to the boot. Both are 5mm bails.
What should be my choice?
The binding clamp touches the front buchle of the boot and it's difficult to realease the clamp (very little room for your finger to pull it, particularly with frozen fingers ....). Any experience?
Suggestions on angles, lifts, stance etc, for starting and staying far from accident

Many thanks for the help and suggestion.
Alex