Glad your hip is giving you better mobility, and you are wise to not over do it.
I think a dusting of the lime should be good, sounds like you have it well under control!
Re: electric fencing, yes I was also thinking that 4 strands of electric twine set at 6”, 12” then 2’& 3’ would be inexpensive and zap the crap out of predators like coyotes, foxes and dogs! Also give any mink, or other a good lifter if they stuck a nose on it (mwah-ha-ha! I love electric fencing). Grass/weeds can be kept down by just spraying the fence line with some round up couple times a year!
I used rebar (for posts) with the screw on insulators for just such a fence in the past.
Dry ground requires a proper ground rod at least 8’ in the ground, and maybe 2 ground rods. I had to do that here.