You still have a couple unanswered questions. Particularly what are you planning to do with your land? Eventually you will need to figure this out.
I am fully aware that agricultural land satisfies at least one requirement for wildlife to survive...food. For example a 160 acre quarter section of wheat does provide protein for migratory birds during their fall migration. However it is quite a stretch of an argument to say that it satisfies all three requirements for the survival of wildlife...especially a cultivated wheat field. That is, food & shelter, and these 2 requirements in quantities large enough to sustain and hold breeding populations of wildlife. Wildlife populatiins which hopefully will grow larger and healthier over time.
And even if no one is using the FWDL per se, the wildlife is using it as it satisfies all 3 requirements for their survival. Once again, it was purchased for wildlife. A much different situation than farmland which although it may provide food at times to some species of animals, make no mistake, it is not habitat. I am not disputing the point you raise about wildlife using our planted spaces to their advantage but only clarifying for others this distinction.
And finally, for my liking, travelling 100km to hunt in a decent area is too far. However I am aware that for many it may be close, and to others it may be their backyard. I would like to see the distance that one has to travel to successfully hunt thier chosen quarry decrease over time not increase as more and more habitat becomes agriculture and pasture and animals become fewer and farther between as human settlement and population displace our wild spaces.
One day the 100km trip from Saskatoon you speak about being full of wildlife will become a 150km trip and so forth until it eventually becomes not even worth the trip. Not sure if you pick-up what I'm laying down.