I'm going to ask some stupid questions because, hey, better to get answers than to keep being ignorant.
Would it be reasonable to do a progression like this?
Day 01. 3X10 @ 40 lbs.
Day 02. 3x8 @ 45 lbs.
Day 03. 3x5 @ 50 lbs.
Day 04. 3x10 @ 45 lbs
Day 05. 3x8 @ 50 lbs.
Day 06. 3x5 @ 55 lbs.
(Assuming that the dumbbell is getting too heavy to add 5 lbs. every session or every other session.)
Gotta run but will be back with some more questions later!