Mine will be a DIY job.
Fortunately I have sprayed a few cars in my time, including a Rancho many moons ago, and I have a top quality compressor and gun. My only concern is using two-pack which takes a bit too long too dry without heat and that is one thing that I don't have (there are also some health & safety issues but I can deal with them). Cellulose is a lot easier for DIY use and I was considering going down that route but it does have a tendency to "sink" into fibreglass and the offer of enough two pack to spray the whole car was too good to turn down.
The great advantage of the murena is that almost all of the panels will be stripped off the car for painting and with a solid colour there should not be any problem with the spray angles creating funny "shades".
Fibreglass bodywork is notoriously difficult to prep hence the high labour costs. Nowadays you can pay a small fortune for a paint job so the murena would beno exception.