Just my advice. Drawer systems are heavy and unless you DIY, fairly expensive. It's far easier to use small totes to separate food and equipment, which can then be stacked on the front seats and rear seat where you have an entire row available now for a sleeping area. As for your fridge, place it on the driver's side rear (where you have direct access from the window) and the power station behind it (nearest passenger row). You can run a surge protector from the 120V outlet, to behind and under the seat folding area. That's where you can plug in you surge protector to all your other devices.
This is a $100 solution versus often, a $3,000 solution. Two endless straps can secure your fridge to the tie down points in the rear. I have never needed to slide my fridge out in 16,000 miles to access what's in it. If you raise the floor up with a drawer system, then you'll need to spend several hundred on a slide, and IMHO, I'd go with a tilt slide out or a slide / table setup (as the fridge is now significantly higher so the tilt is great to have) so add in even more expense.
I also don't like the raised sleeping platform arrangement, because it removes way too much headroom. Most people who do this end up removing it all over time. It's a big compromise. Creating a container based storage solution allows you to remove what you want, when you want, whenever you need to after the trip. Takes minutes to load before the trip.
This won't win you any contests on IG but it works very well. If you truly need more space, I'd invest in a small trailer based camping solution with a RTT, hot water system, water and fuel storage, diesel heater, etc. - or continue building out your Tacoma. LC is great, just needs to be sorted out in a way where all the space is usable / makes sense.