Just out of school I worked at a panelbeater. Over the years I've been forced to hate clear coat. They initially promoted it as 'better': claiming it was longer lasting, produced more shine, stronger against stone chips, etc. (all nonsense). I've seen so many cars quickly look plain ugly by it flaking off, that would have been fine for 20-40 years with 'plain' paint (especially if garaged).
If you don't plan to keep it, think about how much it would sell for today - and then think would a ~$2500 paint job increase the sale price much (sadly, probably not). A $2500 car you added a $2500 paintjob to, might only bring a couple/few hundred more.
I've seen several closed-door resprays - by professionals - and even 80%+ of those are disappointing. (But maybe I have 'higher visual standards' than other people.) Years ago I also helped prep a relative's 1970s Ford coupe for a total respray, where we removed all exterior trim. It was done in a garage by a retired spray painter - and it looked 99% like new compared to cars I'd seen painted at the panel shop with their trim intact.
So if I were going to paint a car, I'd remove all exterior trim, the front grill (so they don't lean on it while paiting and crack it), tail lights, bumpers, mirrors and all door trim and rubbers/seals at waist height along the doors, then tape newspaper over the window glass and wind them down into the doors (no cleaning overspray later). Pull out the glass rubber channel. Also remove front guard blinkers or badges, aerial, and the front & back windscreens (argueably the hardest part)... Otherwise they will sand up to the rubber edge by hand to 'rough up' the paint for the new paint to stick, and because they want to finish the job as fast as possible, they always miss some/many places - which results in an obvious/rough paint edge when done.
Let me put it another way... In spite of my awareness from working with that panelbeater, I didn't notice one of our cars had been resprayed, until I noticed a different paint edge inside the petrol cap door AFTER we bought the car - because it had been resprayed with all the trim and glass removed.
I guess I just don't understand why people will pay a couple of grand for a tacky-looking respray with rough edges, when they could have added just two weekends (one to remove, one to replace the trim), so the painter could paint all the way under the rubbers/trim. It makes for less work on the painter's part too where sanding is concerned, which MAY translate into less cost. But even if not, it still means a better looking result anywhere they don't carefully sand right up to rubber/trim edges and perfectly mask.
Finally, I've always considered owning a tired-looking car as a good thing... Morons will key the paint, or steal the shiny newer one in the next space while ignoring our 'old/dirty/ugly' cars. So just embrace it... Look for the car you want, cash its rego in while you get THAT one ready (including painting if it needs it), while you have this one to drive, it having cost you nothing extra as you planned to sell it anyway. ;-)