Good advice, in fact, great advice!
I reread this thread and sure enough, nobody mentioned a laser rangefinder. If you don't know how far it's tough to make the first shot hit.
A lot of the range finders that claim 1K yd ranging write (in very small print in back of the instructions) that on non-reflective targets (that's tech speak for critters) the range is about half. I have found most lasers up to the 1000 yard mark will not range a deer past about 400 yards reliably.
So you are going to look at 1200 - 1600 yard lasers. None are cheap but the threads on this website will tell you there is a big difference. Len has the G7 BR2
on sale and started carrying it because it worked. It is the one most of the LR guys I talk to trust.
Ditto WildRose. Better scope. I have a 4-12 (old school) but I would look at WildRose's suggestions in the 4X - 14X or 16X top end. Most big game scopes 40 years ago were 4X. That is plenty low enough for close shots. I have a T16 Weaver and it is plenty out to 1000 yards.
1/2 m.o.a. is just right....