Re: 1000-2000 yard scope
I had a .338 snipetac, I had a NF 8x32x56 NP-2DD on it. 40 moa base. Not a good choice, not the power so to speak, just the limited adjustment with a 30mm tube, I had to have a 600 yard zero, which was no biggie to me because I didn't plan on shooting the gun under 600.
As for magnification it would depend on what size target you're shooting at. A 6" plate at 2000 would be hard to see in a scope under 20 power.
At 2k, your biggest enemy is mirage, unless your shooting early in the am, or right before dark.
If you feel you can afford to shoot the snipetac, buying a quality 34mm tube would be a must, IMO, don't scimp.
One thing about power, you can always crank it down, mine was usually set on 25, except early mornings, when I could crank it up.
As for FFP-SFP, if you are planning shooting holdovers, FFP is the way to go, if dialing like I did, SFP works fine, and has for years.