this style of wire stripper. https://www.amazon.com.au/Weicon-Adjustable-Wire-Stripper-No/dp/B001NUMVHQ
i have used the HoHoHo out of my knipex one. I got that weicon when it was ~$45 to see if it was any good as a cheaper option to recommend. its $62 right now, but at least it works well...
kinda depends how deep you want to go.
I'd be having conduit run from wherever im having my network in the house to pits or cabinets in the yard. also under any driveways/paths.
plenty of outdoor power and network points. cameras and wireless ap.
I have seen many people complaining about how fiddly the 3d printed seed holders are.
You get the benefits of flatter props, but its a pain in the ass to install them.
there is things like the mattos evo pixel(and many others similar), which are basically a seed in a bigger housing that fit...
replace your shed ap with this https://www.tp-link.com/au/home-networking/range-extender/re715x/
it will integrate with your existing tplink router and make a unified network.