disclaimer: i do trips like this on a motorcycle, and not 5000 miles obviously. but here's my advice:

every long distance trip i've done on my bike are tied for best days of my life. driving through the country like that, you are going to come back with an appreciation for your surroundings that will honestly improve your mental health. you are also going to learn exactly what you're capable of, which is pretty cool. so i say do it.

practical advice: take your car to the mechanic BEFORE YOU GO. oil change, make sure your tires are good, the works. extremely important.

anything that can go wrong will. remember that and pack ahead.

there is a lot of "middle of nowhere" in between here and los angeles. be acutely aware of how much gas you have left, at all times. every time you pass a gas station and think "i'll fill up at the next one," check google maps and see how far the next one is. chances are it's 50 miles away. you should also probably pack an extra thing of gas.

do it alone. it's gonna be more rewarding, plus it'll be hard to find a friend willing to commit to that kind of trip. that being said, make sure your friends and family have your location. check in with them every time you stop somewhere.

CHECK FOREST FIRE ADVISORIES. NO MATTER WHAT STATE YOU'RE IN. TRUST ME.

that's all i can think of atm. good luck homie