I am sure Mexico, Mo has the terrain to allow you to enjoy ELR shooting BUT do you have access to a safe place to shoot 2,000 yards or more?
I own both the Wheeler Accuracy built 300NM IMP and 338LM. The longest distance I have access to is about 2200 yards and it takes just over four hours to get there. Otherwise, I can drive 3 hours and shoot 1250 yards. I didn't factor in "sleepy Joe" fuel prices when I built them so trips have to more productive.
The 338LM is easier to spot shots at longer ranges but, in my mind, the 300NMI is, at least in my mind, more versatile. Why? Because I feel foolish at the local range (600 yards) with my 338LM. Burning that much powder and pricey bullets (now over $1 ea) seems wasteful while I can ease my mind slightly that the 300NMI is a little more 'economical".