Feasability of multifunction unit plus inclunometer

Ive been trying for ages to find an inclinometer for my pickup which were only found in JDM and rare at that. Almost impossible to find in the US. Next step is naturally to make one, right? My rig is too old for the ECU to do anything but air/fuel ratios. It is PreOBD so that is not an option.

My most recent programming experience is with PLCs and thats not really programming. More like coding with hieroglyphics. I studied computer embedded systems for a couple years so I have some C++ under my belt as well as scripting and assembly. Assembly is for those who like to punish themselves, IMHO. Not sure what environment is currently used for Arduino. I have worked with Arduino a few years back but it was a UAV and was working with mostly finished code. Im pretty comfortable with circuits having built quite a few. Most notable were MOSFET controlled airsoft gun trigger systems capable of over 1000A burst current.

The plan:

Ideally I would like these features:

-Outside Temp in F
-Pitch
-Roll
-Elevation above sea level
-Measure Vacuum/Boost in PSI

I will have a 12v power source and it will be controlled by the ignition. I would like to be as close to real time with vacuum, pitch and roll as I can be. Some form of a display will be necessary and would be fine if it can be remote so I can stuff the guts where they fit. Being able to dim the display would be great and it will need at least 1 navigation button to index through displayed items. Adding in vacuum will eliminate the need for another gauge panel and set of gauges.

Thoughts, opinions?
You guys think it is feasible for me? If so where should I start for looking into components and coding?