Just in case people do not know, you can use Engineering Enchants AND Normal enchants at the moment.
So this means:
Head - Mind Control - which also gives +45 STA
Rocket Boots (w00t!)
Rocket Gloves + Normal Enchant (the 250 armor one cannot be used with a normal enchant, but can be used with rocket gloves)
Back - Parachute with +23 AGI (crit only now for warrior
) with normal enchant
Bomb Belt with normal BS belt buckle - or as mentioned above new shield belt
So the STA difference isn't too much when you consider the helm enchant, combine that with other goodies and I'd say ENG