a simpler 4x5 option
I have what I will call a 'daylight' 4x5 tank. It has a light trap in the top for a somewhat leisurely fill time. You can pour out with the lid on by tipping it up on one corner. It is made of bakelight, and accordingly I hope I never slip and drop the thing. It can hold up to 6 hangers.
I usually load up 6 hangers and arrange them in different corners my dark drawer (sized to hold 11x14 paper) according to if they are n+1, n, n-1 etc.
I start with the tank filled with developer, and , since I mostly work with 777 or pmk developer (both of which I like to run at 75F), I pour the developer into the tank, and then pop the tank into my 'darkroom' microwave to warm the chems up. The bakelite holds the heat well.
Put n+1, n and n-1 times on a post it note on the edge of the shelf above the sink, and set count down timer (gralab 300) to n+1 time for the temperature in use.
Lights out, fish the n+ hangers out of the drawer, and drop them into the tank. start the timer. Lid on, agitate. Usually a short time later lights out, add in the N film hangers, and again, if necessary, the n-1 film hangers at their time.
The count down timer powers another timer that beeps every x seconds. Usually I have it beep every 15 seconds for film, and give the tank a jiggle every time it beeps. Otherwise, the lights are on, and I am getting caught up on magazine reading, etc. or pouring the right amount of replenisher into the 777 storage bottle.
At the end of the devloper cycle if I am tuned in, I will start the pout early, and then pop the top off the tank in the dark to pour the stop rinse step in quickly, and dump and refill promptly before the fixer goes in. 2-5 minutes in PM's superfix, again with the lid on and lights on and then it is time to start the wash.
All up I don't consider it a drag doing this by hand since my brain is mostly free. I usually don't process 4x5 more than a couple of times per month. If I was doing it on a daily basis, then I would seek more automation.
If anyone has a spare b&w timer board for a wing lynch 4 laying around unloved, I certainly could be persuaded to pay for the pstage and start rotary processing my B&W negs.