Speaking for myself, I prefer to do as much as possible without using "Pro's".
I do my own glasswork, painting, welding, and, until most of my tools were stolen, frame and cage bending/steel fabrication. For welding I primarily use a small Lincoln MIG welder, although I sometimes use a TIG/Stick for convenience. I have a 3 horsepower 115 volt air compressor with a 30 gallon tank and a HVLP sprayer for color and clear coats (it has a 1.4 mil tip), and a siphon feed with a 1.8 tip for hi fill primer and poly fil primer (the poly fil vastly improves paint adhesion to bare (non-gel coated) fiberglass). The paint comes out nice, so long as you prep well (paint is 90% prep). Any flaws are learning experiences that are easily corrected with some sanding and/or respraying.
Well, really, any thing you do on your buggy (or any other project in life) is 90% prep......
I do know that I achieve IMMENSE satisfaction doing as much as I can myself..no matter the end result...
my .02$
p.s. I wasnt born knowing how to do any of these things, and being new to VW's there is a steep learning curve ahead of me now.. But, with the help of friendly types on this forum, and books, and just being willing to do it, the project can be accomplished
Sorry for the long winded and preachy post....I am passionate about my passions

This IS my sig......