I'm jealous, can't start working on mine until it warms up here. Snowed today and supposed to the rest of the week until Saturday with the exception of tomorrow. Laying down the sound vibration absorbing matts I'm sure you understand that they need to be warm to roll out.
I looked at the Victory platform but not a fan of metal as a base platform. Or the holes in it with sliding plates behind it and all the bolts on top. Or the lip in front, it sits up higher than I want every square inch in these things is valuable. And you are sort of tied into their mounting system and equipment. The Goose platform is nice, but not $850 nice for a 1/2" thick piece of 4x4 plywood. Not going to happen with me. And my needs are a bit different than many so basically might as well make it myself, I will have a platform on top of a platform with the top one removable.
Sounds like your fridge is one need you have already identified. So would evaluate your needs and see if either of the premade systems will satisfy your requirements. Because you already put down sound deadening you will most likely have to cut some of it out to get those systems to mount correctly. Just a thought if you go premade.
I see leads for a multimeter. And you wired the power source to your fridge already. You can do woodworking. Attention to detail and as already mentioned measure twice and cut once. I normally use a witness stick for cuts but will still flip it over and mark it on the other side so that I "measure twice". You got this if you want to do it yourself. And will have tools for other projects down the road if you select the right tools. Can't imagine owning a home without having woodworking tools, just saying.
You can get by with 4x4 sheets of plywood so you don't have to worry about 8'. And can have most places rip them in half if that is what you need to do and finish cut them at home and 8' is your only option. At one time a carpenter was measured by the sawhorses he built for himself. With premade horses readily available that isn't the case so much anymore. And you are going to want horses or a work table\bench for cutting and drilling. If you go metal horses make sure you put a sacrificial wood piece on top of them to protect your saw blade. I have 4 horses around here that I built more than 30 years ago but prefer the newer portable tables now. Worx Pegasus, Pony portable work table, or B&D workmate (higher end one). They each have their strengths and weaknesses. You can start with one for a 4x4 sheet then over time add another as needed. Or just go with a pair of horses.
Straight edge guide, I have an old metal clamp on keep threating myself that I'm going to upgrade it but never have. Similar to this
Bora 50" circular saw guide. If you're cutting 48" you want your guide to be longer than your workpiece of 48". Doesn't have to be fancy and I've made my own before like this but using MDF.
You are going to want a circular saw and drill at a minimum. Sander is nice as well but a sanding block or piece of scrap lumber works on sheet goods too. Just more physical work and takes longer. If you do more than straight lines a jigsaw. My jigsaw is still a corded Bosh. Have plenty of corded tools but like everyone else have gone to cordless for the most part. Not that there is anything wrong with corded tools we used them for many years, and hand tools too LOL. And extension cords.
Take your time in selecting cordless if you go that way, once you are vested in batteries that is the brand you are going to go with. It is the cost of the batteries that is expensive. Ryobi is the cheapest and for many homeowners are enough. But I had bad luck with their batteries in yard tools when they first came out. I ended up going with Rigid (Home Depot) and they have a lifetime warranty. At my age lifetime doesn't mean so much. But for a younger person...
Good luck and you will do fine, I have no doubt about it. Try to plan out ahead of time what your needs are and what you want for the star of end result. SHW Offroad makes another platform for the GX, they don't sell a base plate only however. He does have one of the better videos out there on building your own drawers: Mistakes to Avoid Building Your Own Overland Drawers. Well worth the watch IMO if you haven't seen it yet and are thinking of making drawers.
