well I just recently went fb, and im not sure what build I should do.

my fb hr is 20, so I have all the basic resist stats;
now my question is, should I buy a resist bike? or an offensive bike?

here are my stats:

atk - 2214
def - 2590
crit rate - 56/56
crit dmg - 223
samp - 57

and again, all the basic resist from having hr 20.

im not sure if I wanna boost my resist to tank longer, or increase my dmg by getting an offsensive bike.
any suggestions will be helpful.

bikes im planning on getting depending on build:

offensive - 70atk/17dmg rw3
defensive - 12rcr/10ramp rw3