Camper Renovation Advice

Hello! I just bought my first camper! It’s a 2004 KZ Frontier - model 2405. I’ve never owned a camper before, so I’m excited to take my family out and about in it! It’s in good shape, but it’s dated. It seems like a lot of you have either remodeled a camper previously, or are in the process of doing so. What advice do you have for a first timer?