ok, you sound like your in a spot of trouble. go to a gym and try to learn boxing there rather than at home with tapes... or thats the way your message came across to me.

i dont advise you to try and box like either of the rockys. marciano was unique in that he would punch and punch and punch from bell to bell, not many people have the stamina for that kind of stuff.Not to mention that whenever baloaba got into a ring he lost hit guard and just brawled, i mean seriousely there was no indication of the training that he put in, he might have just been some guy off the street.

you say your resiliant which is good, but unless your going pro it wont do you all that much good. remember in amatuer you have 4 round maximum to do the best you can, and every punch the other guy lands is one against you
on the score cards. my suggestion to you would be to work the footwork and the guard, learn to get away from some of those punches, thenm come back with your own.

and when you say where should i punch body or head, you punch where there is an opening, or you make your own. punching to the body tends to lower guards leaving their head open to attack. experiment with 3 punch combos in varying hights, say the basic left, right, left hook. go left to the head, the right to the body, sidestep and the left hook on the point of the chin.

all the best

alex