ive decided on getting the horton steelforce.

but as for arrow and broadhead selection...

whenever i buy a different type of broadhead or something..... should i just stick to one weight? so that whenever i use a different broadhead it wont be shooting too much different so i wont have to keep resighting depending on which broadhead i use?
the steelforce comes with 4 arrow shafts and i was going to buy some good hunting broadheads for goats etc and also some of those bludgeon broadheads for bunnys etc. so if i buy the same weight of each one would it be shooting around about the same??

thanks for the help