If it was me i'd probably not hunt with it but that's just me. I'd hate for something to happen to it. ya know. Either way wouldn't be wrong. You do what you want to do cause he left it to you for you to enjoy.
How ever far you can hit a tennis ball on the range you are good to go on any archery shot on deer. 150 grain bullet any style bullet you want to put in it will put a deer down if you confine yourself to shots you can make.
Stay away from any high hits on the shoulder and you'll be fine.