I have been comfortable down to 2 or 3 F with this and an insulated pad. Over 100 nights in it at various temps and very happy with the value.
https://www.hykeandbyke.com/collections/down-sleeping-bags/products/eolus-800-fill-power-0-f-goose-down-sleeping-bag
Vest is a much more personal choice. I have a wingworks that I love for full days carry lots of water and shells/birds. For lightweight, filson and orvis make great options and it seems like there are new companies everyday.
For high dollar stuff, the new pyke gear thats advertising on all the podcasts is awesome. For budget, wrangler outdoor pants and Dan's chaps are as good per dollar as any gear I own.
I have DDs not PPs but everyone I know that has switched from Labs to german versatile dogs is very happy. The range issue is all training. My male is very hard headed but clearly understands that he can hunt sharpies at 400 yds before lunch and must stay within 40 yds to chase pheasant after...
I have let mine chase a few foxes that gave them the slip, and somehow haven't had a coyote encounter yet. I feel confident that either dog could dispatch a fox or yote (it wouldn't be free). I definitely believe that a drahthaar can catch a fox or coyote, I just don't know if the odds of...
I think this sums up the JGHV system's benefits as they apply to OPs needs very well. My two drahthaars are just as described above. If I let them they will fight anything and regularly kill coons, but will sit on the dock and watch geese honk away because I told them.
If we are pheasant...
I have used two garmin products, the barklimiter and the PT10, the limiter has more options but the PT10 hits a little harder and works better for my stubborn one. The PT10 is designed to be paired with a non GPS garmin device but can be used solo without the handheld as a bark collar.