Depends on what you intend to hunt US or African dangerous game, etc. Do you intent to hand load or depend on factory Ammo? Do you need a commonly available caliber or can you use an exotic speciality caliber. Do you intend to target shoot and thus need a caliber that is kind to bbls or is...
Am 82 and have been hunting/shooting since 15. Eyes also limiting - needed cataract surgery as lost ability to see clearly cross hairs - now better. Like nightforce scopes best 24 power for long range stuff. Use laser rangefinder as eyes make mil dot estimation difficult and slow. I find that...
I also am a 1911 man and believe the Kimber brand is a winer I like night sights, al frame (for weight only) ss slide (so no holster rust on steelframe) and thin grips (so easy to conceal with iwb holster)
and no ambi safety (digs into your side) Stainless Ultra TLE ll meets these specs -- GL