I would just focus on a section at a time. For instance, do the front axle and front wheels as one project. Then the fenders, then the hood, etc. Worst first.
From the OP pictures I would suggest doing just one section at a time also.
I bought a 2006
L48 back in June.
It has some paint areas that look like the OP bad areas, but like his machine, some good areas also.
I am in Florida now for the winter, and my Kubota is not here.
This season (Summer), I painted both fenders (removed and blasted first), the right hand fender mounted selector panel, the seat frame assembly, the console cover parts, all 4 wheels, and the loader bucket, plus some sub-frame touch-up.
Lots of prep work first,...... and I DO NOT use rattle cans!
Next Summer will be the entire hoe.
Later the loader frame, and maybe the cowl.
My projects are slow....I am an old guy.
I used paint sold by Amazon: TTB27-GL TTB..... @ $26.52 per gal.
It is a machinery enamel, that worked very well, and is an EXACT Kubota match (possibly made by Valspar?).
I did also add a little Valspar 4625 enamel hardener. .
The paint is also available in quarts as TTB-29-QT TTB for $17.05