You can do the trans oil change easy with a suction pump. Just pull out all the oil you can and then re fill.
50hr oil and not too cold temps you can change the oil too. May as well during layup. Then it's ready to go.
As said though its not totally necessary. Think about how many cars sit for months on end and then run fine for years to come.
'06 X2 MCX
"I understand why some people may not want to do this the way I have recommended but I can't understand the death grip some people have on a toilet plunger with a hose fitting." -JimN