Itinerary Recommendations (PPC and El Nido)

My family and I will go to Palawan next week. We didn't book any tours and would like to do a DIY itinerary. Not familiar with the tourist attractions there. So far, these are the attractions we planned on visiting:

PPC - Underground River, Plaza Cuartel, Crocodile Farm, Museum

El Nido - Tour A/C

We won't be dwelling too much with water activities and would appreciate other attractions such as nature and food tripping. Would appreciate your recommendations 🥰