Page Links

I should’ve of done everything via wp in the beginning. I regret using html templates for all my pages but don’t want to redo the entire website. I wanted to know if it’s possible to do the following:

1. make an ‘Event’ page via wp using https://www.cakedla.com/events/events.html header
2. use wp’s ‘Event’ page link and link it to the ‘event’ image from the header above
3. erase (make invisible) default navigation every time i make a new page just incase I want only the links

Or should I just redo the entire website? ughhh…this is crazy.