Yes you done did over thunk it.
I went for a 100 mile ride today and then came home and changed oil and transmission.
Trust me the fist time is the worst
It still is a PITA but I did mine in about 90 minuets today. I clean all threads screw etc with a brass brush. And I clean everything spotless that is taken off and the underside of the bike that becomes exposed. Or what you slop gear oil all over
And no matter how good you are you are gonna spill some transmission fluid
Cover under your pan and work area. I use a low flat Rubbermaid round oil pan and a 1 gallon Tide bottle I sliced down for a funnel. The slop up rag is nice on the center stand and frame and metal parts in general on the bottom of the bike so I use it to wipe her belly clean and my lift where the center stand hits it.
I also change my oil and transmission and final drive each time. I use Dino oil, and Mobile 1 for the transmission and final drive. I try every 4-5000 miles.
I also use 1 teaspoon of M Gear Additive to the FD, and 1 tablespoon in the transmission.
This is the second change of each and I was impressed on the transmission plug it was very light paste and not gritty. I have seen bigger pieces in the first few changes Not boulders but more than paste. Of course you always wonder what might have got washed off in the three hand Monty exchange of holding the transmission plug tight, get your home made funnel over your drain pan, and then getting the plug out of the stream, without messing with your funnel
FD is always just a light fuzz but It too appears to be a smaller consistency, and of course molly turns it black, both oils come out black with Molly in them.
Anyway you will get better at it no worries, and save a bunch of money
As said a lift is a big help, but an old moving pad doubled over and laying on it is not bad either