If you are a trophy hunter, and only get a week to hunt, then you really , for the most part have your best chances within 20 minutes after day break, and within the last 20 minutes of shooting light.
That said, most rifles can be made to shoot minute of pie plate, and most deer can be taken with that shot. Why do I bring this up you ask? Skip the new rifle and top one of your currant rifles with a scope which will extend your prime time to 30 minutes in the morning, and 30 minutes in the evening.
Very good deals on quality used optics can be had, and not very risky considering the makers will repair them, in most cases, at no charge.