New to this so just looking for direction have the 715t. with carry handle. will be shooting 25-300yds. I want to see the targets clearly and upclose. my shooting eye is not that great for vision. may have to shoot left handed. but i am natural right hand. so looking for quick aquisition for close quarters(25-50yds) and would like to be able to shoot 100yds all day with the occassional 300yd shot somewhat clear. What to get ??? help me O B 1.