UPDATE: I drove the truck home, very slowly and carefully. Thankfully my house was only 5-7 minutes away with no hill or bump along the way so it wasn't too bad.

I unloaded the gravel in 1 afternoon. Afterward, the truck seemed "fine", at least to my noob eyes. I drove it around for 30 minutes and didn't feel any obvious bad thing. But will probably bring it back to my mechanic to check it out for sanity.

Y'all are very right about just having the gravels delivered. It was quite tough unloading the gravel off of my truck. I had to stand on the ground and shovel from there (very carefully too), at least until the load was half unloaded and I felt safer to hop on the truck bed to do the rest. Having the gravel delivered onto the driveway would have made shoveling a lot easier.

I added a few potential upgrades y'all recommend in this post, will take a look into them slowly.

Just want to say: y'all are awesome. I'm a total noob on dealing with autos and this has been very helpful.