Personally, I think Sign Tech is about a lame a name as 99% of all the other sign business names. I found that, when searching for a name for my own business, there is much competition for names amongst the sign businesses, graphic designers, web designers, art and sign supply businesses, etc. for naming conventions. Therefore, I think that the best names in the business utilize something other than the commonplace words like sign, signs, graphics, graphix, art, design, etc.
Honestly Mike, you seem to change your business, your name, your location, your life about as frequently as some people change their clothes. I would suggest to you that you establish some stability in your life, at least where your business is concerned, if you're going to be in business for yourself. Otherwise just go and try to work for others across the country as a nomadic soul.