Pillar,
Whatcha got in mind? I'm always open to feedback and new learning.
You can customize it any way you would like but it follows a similar template to what you are doing. Would look something like this:
Monday
Squat - 70%
Accessories
Wednesday
Bench - max effort
Light accessories
Friday
Deadlift - 80%
Accessories
Take a look at the prilopen chart to determine your optimal sets and reps and just fill that in according to the days percentages. On max effort days work up to a max effort double or single (I prefer doubles).
Each week you rotate the percentages for the lift between 70 80 and ME.
Accessories are whatever you feel you need. But focus on beating the hell out of the posterior chain.
On a program like this you almost never need a deload. If you feel like you do on the 70% day just drop to 60% and work on speed.
See if you can put together a 3 week wave using that and I will take a look. You will get steady progress and there is no wall to hit because you work optimally not maximally. Mostly sub-PR weights.
You can even swap out your main lifts. Say after 3 weeks of flat bench the wave is done. The next wave instead of bench you can do OHP. Even without benching if you improve your OHP your bench WILL go up.