One more "What gauge to get" question

[Chipdog]

I got a Gauge Cage for my birthday. It is the one with 2, 2 5/8" gauges with vents for the center a/c vent. I already have a boost gauge for the first now I would like to know what you think the other should be. I was thinking about a fuel pressure but tell if there is something more important I need to have.

I know this has been gone over time and time again but its always nice to get a fresh opinion.

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92 GT Convertible
Hooker Headers, H-Pipe, Flow Masters, 4.10s, BBK 1.5 drop, 73mm Mass air, 65 FMS TB, FMS Aluminum radiator, T-5 swap with a Steeda shifter.

And a Small Blow Job