Dyno cost & other ???

[Mule]

I tried searching for some of this, but it's so spread out that I can't take the time at my office. I'm needing to do some testing on my 03. How much should I pay to stick the thing on a dyno? I am told that is how I need to figure a baseline temp, but I can't really see why. What I have and what I need.... It's the 03 HO, I have an AFE cold air system (Magnum Force), Edge Ez (#3 pin) w/ waste gate elbow installed on turbo, Aeroturbine and a 5" Magnaflow muffler. I can peg my boost gauge at 35# easy.... I have the Pyro in the exhaust manifild down pipe before the turbo, basically reading the front 3 cyls temp (I know, it should be on the back cyls, but that's where the exhaust shop stuck it). I'm getting ready to buy a 25' 5th wheel camper and stick my 19' boat behind it. I am concerned about the max EGTs I can hit, so I want to figure out the max #s that are safe. I plan on pulling in the mountains here in Colorado. I'm also planning on pulling a 27' enclosed trailer full of a dive shop's gear and tanks. I'm heading to Utah with it. I am also concerned about fuel pressure. I think I am running out of fuel when I get on it. I have some weird things happening every once in a while. When I start it in the afternoons to go home, it will try to stall on me when I drive about a block from my office and hit a stop sign. So here is the stupid questions. What is the max EGT temp? Does this truck has a lift pump as well as a regular fuel pump? Should I have an aftermarket fuel pump with the mods I have? Should I have a pressure gauge? Is there a port to plug a gauge into or do I have to add a fitting? Who sells them for a reasonable price on line if I need one? I plan on dropping the Edge to the #2 setting for pulling, would this still tax the fuel system? Thanks Greg