Are you flying in from the mainland to hunt? What's your plan to get the meat/hide back to the mainland?
After I saw Rinella hunt the Hawaii goats it has interested me.
The manual pushmower is where it's at for a workout. Save on the go ruck pack with some 2 liter soda bottles filled with sand or water in a backpack. Plus, you can drink the water if you need it.
The DEC seedling sale is a great resource. If you have the time and space to start some oaks from acorns, and keep them fenced in until they are big enough the deer want them, that's the absolute cheapest route. Put a camera out and see what the deer are currently eating and add to that.
As...
https://www.riteintherain.com/
Rite in the Rain has waterproof printer paper, index cards and notebooks. I have printed color maps on a home laser printer and they work well. The stuff is incredible. Use a pencil not a sharpie though.
I went from mid nineties Chevy truck to a 2016 f150. Rides much better, has more airbags and there are many many parts available and I can get motorcraft parts right from the dealer still, not that I have to do much work on it anyway.