Of the two shop inspectors I have hired, they both came from the fabrication side first. This way they know the practises and procedures on how to burn, weld, bend, bolt ect. Some guys don't have that background, but it sounds like you may have some ,so that should be to your advantage.
This economy sucks, so it MIGHT be difficult to get started, but don't let that stop you.
Yes, guys who travel tend to make more money than guys who don't. Personnally I'd rather be home with my family, than to make more money and see them every 3-4 weeks, but thats just me. You'll need to consider this, and be aware to get experience, you may not have the option and have to travel to get experience under your belt. I did it for a couple of years and hated it, but that's what it took to get started.
Good Luck
Chris