Would this be a bad idea?

Hydraulic lifters with lack of preload can result in the retaining clips that hold the plunger in the lifter to fatigue and break out. My 340 came to me with a fresh rebuilt engine and pushrods .030” shorter that stock of 7.500”, and provided exactly zero preload. Consequently there were 7 lifters missing their clips. I ended up buying new set of hydraulic lifters, new custom length pushrods, and Harland Sharp adjustable rockers. This allowed me to perfect my preload setting to around .030 preload per lifter. The rocker arm adjustments for preload were done with the intake off and by rolling the engine over to place lifters on the base circle of the cam lobe to set each lifter exactly where I wanted it for preload. The proof was in the results, no more noisy valvetrain now.

if your lifters are not coming apart on you yet you can skip the new lifter step and just go to adjustable rockers and custom length pushrods to make sure you get the adjusters in the correct range for proper lubrication.