Endurance Focused

My friend and I are going to climb 36 pitches at Seneca next may within 24 hours (we estimate it'll take us 14-18 hours) starting at 1am or so on a weekday.

I've 'plateaued' on training ideas. Seneca is about cracks and the hardest routes that we are going to climb is 5.7-5.8 seneca grades.

What endurance training practices do you do employ? Any suggestions for weekly and monthly plans? What would you do if you were climbing 2700-3000ft in a day at seneca?

Note: this event is the focus for my winter training and I have never attempted anything like this. The longest routes/days I've done have been at seneca and the gunks.

This is fairly vague purposedly due to time but I am interested in your point of view given the info described. Thank you all!

Your path depends on where you want to go and where you start.

What is the most number pitches in 24 hours can you climb now?