If you want extra frequency and heavy singles/doubles and such, why not just run 5/3/1 for Powerlifting, which allows the heavy singles, combined with the assistance from Boring But Big?
5/3/1 for Powerlifting allows heavy singles on the big lifts.
With the Boring But Big assistance template, you could use the squat for deadlift assistance, press for bench assistance - and vice versa, giving you loads of volume and frequency with the big 4.
OR… if you are feeling insane, do the 5/3/1 routine laid out in this thread:
As someone who lost years of progress through trying to do my own thing… I strongly recommend follow the program correctly. 6 days of 5/3/1 per week is not the way.
Good luck!