I wouldn't comfortably run a vp below 10 psi.

 

When I get my gauges in and installed I'll let you know what the pressure looks like at various stages of throttle, with a cheap but relocated lift pump.

 

I would like to add that I would learn all I can about your truck and not be afraid to put some money in the truck as you can afford it.
Your truck with proper maintenance can last you a very long time. It is really a sound investment in reliable transportation. I know for myself anyway with the price of the new trucks and the new EPA garbage on them I will keep mine for a long time.

 

Yes I plan on keeping this truck literally forever, it's been my favorite body style of truck since 1993 when it came out and this combo of options is what I've always wanted since then (when I was in 3rd grade, wow...).