Well it sounds like the injury side of things is being covered in your other thread. As for the overbite - it may not be a problem, but depending on the severity it may be affecting his ability to eat. I can't seem to find the link right now, but I recall watching a vid of one that was so bad it needed to be assist fed and I believe the condition was referred to as shark's mouth. I'm sure someone more experienced can provide more information on that subject.
Now for this -
I don't want him to think everytime i go to pick him up, he's getting fed, and try to strike at me
Tub/Tank aggression is a myth. Can you imagine one of the big breeders like NERD moving their animals to feed? Ridiculous. Or a Burm or Retic breeder moving their snakes to feed?
Moving to feed has 0 Pros and a list of Cons -
Stresses out your snake unnecessarily.
Risk of regurg.
Refusal to eat.
Possibly getting bit from your snake being in 'feeding mode'.