I have the 6x24 pst on my gun, and I really like having the extra power. I hunt Central WA up high, so I typically am spending the majority of my time glassing from one spot, then moving slow through the timber during the afternoons. When Im walking the timber, I have my power down all the way. I have my eye relief positioned for a standing shot, just so if I have to take a quick ****, I will be right one the money. I have taken two deer since I have that scope, one on full power at 120 and one at 6x at 70ish. The one at 70 was a quick shot. Maybe it was luck, but I found the animal quick and had a full picture. Probably because I spent so much time getting the eye relief perfect.
If it were me, I would say go with the higher power, especially if you are hunting from a set spot and not doing a lot of creeping. I think your FOV will be just fine when on high power. I am a much more confident shot the closer and more precise I can see a target.