Kurt, that's some of the best advice I've seen regarding BOMBing in quite a while, nice job.
Kurt's post left really little more for me to say, other than I agree 110%. Do it right from the start, put in gauges first and make one of them your fuel pressure gauge, it's as important as a egt. gauge IMHO. If you can afford only two gauges to start with, I would make them egt. pre-turbo and FP. You can always add the boost gauge later. Also, because you tow, I would stay away from anything over the Edge EZ or it's equal, due to the clutch, or lack thereof, in the ETH. The EZ alone makes a real nice power upgrade for the stock ETH.
Scott W.