I'm a long ways from doing my panel, but I have done a fair amount of experimentation on this subject. I tried several methods of printing using an inkjet printer, including clear labels, normal paper, and photo paper. The clear labels were more translucent than transparent. The photo paper allowed colored labels that looked like an engraved plastic name tag. I had a few tests that produced nearly acceptable results, but I could see the edges of the labels, so I looked at other options.
I thought doing my own silkscreen would be nice, and I experimented with the PhotoEZ stuff at:
This works, but I have still not gotten consistent perfect results. Pretty good, but not perfect.
Then, I got a link off of a thread in this forum to Mark and Dave's RV at:
They seemed to be pretty happy with the DecalPro stuff at:
I bought their PCB package and got great results doing Printed circuit boards. Then I bought their normal Decal transfer stuff, and done a bit of experimentation. I am still working on the process, since I almost always loose a part of a character or two in the transfer, but I am pretty sure that I will go with this.
BTW, with all of my experiments, I have spent way more money than if I had just let a professional do this for me, but then I like the experimentation part.