Glad to hear the cruisin went well.
Gotta say that you are all over the map on this, which is typical for a young new owner.
Brakes - early style, right? Small pattern indicates that these are not the late style.
Get the whole front end lubed, and do the wheel bearings. Check the rotors and turn them only if necessary. They are not cheap to replace!
Check over that suspension while you are under there and make sure everything is good.
Electrical - flakey fuel gauges and lights out are typical for older Mopars. Set aside a weekend when you can to go through and clean every ground, the bulkhead connector, gauge connections and each light connector and ground. The sending unit has a little ground strap that connects over the hose between the unit and the fuel line. This is the path to ground and is often missing, damaged or just corroded to the point where it doesn't provide ground. If this doesn't fix it, you will probably have to pull the sending unit. Set that aside for another day and continue with electrical. Do not be surprized if the electrical cleanup is needed again a couple weeks later. This thing has been assembled for a long time and between years of dirt and corrosion and driving vibrations, it will tend to have interesting circuit connections. I pull the fuses and clean the clips too. I use a dist. terminal brush to clean the fuse clips and all the bulb sockets. Disconnect the battery first!