What would be the most important element to consider when purchasing a bow for the first time, given I'd like to use it for target practice, deer, hog, turkey, and even bowfishing?

1) What would be the ideal fps (feet per second) to go with?
2) How simple is it to adjust draw length? (I'm 5/8, 160 lb.)
3) Please discuss any other relevant info.


Thank you.