Thinking of Switching Up

I'm thinking of switching up my training just a bit. So I've been doing a upper/lower heavy/heavier split. But if you only do singles & triples....well you hit your high single of the week...it's not like next week it's going up 15 lbs. But say on deadlifting I hit say 365 for 10 reps....maybe next week I get 12. And how does that translate out? I'm sure the 1RM would actually increase if I did it that way for a few weeks. so instead of doing a heavy/light upper/lower I'm thinking of doing like a upper/lower heavy/intense  where I do like 10-12 rep sets of squats, and deadlifts, and a widowmaker on the end of those two intense days