65 cuda Interior Advice

I got a 65 barracuda and Im redoing my interior. I got to removing all the carpet and seats but now I'm stuck. This is my first resto which is why I'm asking how to. I don't want to remove the dash for now i just want to do the floor first. I want to rhino liner it then put the carpet but if somethings better or easier than rhino what is it?. I also want to do the panels as you can see but i don't know what will make it look new again. I don't have much rust but i don't want any. SO my question is what sand paper do i need and after that what else do i need to do. Some advice please I'm doing this all my self in my backyard.Ive been trying to look up videos but none of them are the full interior restore. My friend was telling me about steel wool and with clorox and water would take off the rust on the doors but idk if he's right or not..I know its asking a lot but i would really appreciate it Thanks


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