This would be worth it if you could get the scissor jack for cheap and adjust it manually during the print.

As soon as you start down the road of using a stepper motor (with stepper controller and Arduino), your 70% of the way to a proper motorized Z-Axis and the drip system becomes irrelevant. When I talk about a "proper Z-Axis" system, I'm referring to a system that will move the build plate ONLY once a layer is finished being printed. This is what you want. Now every layer gets printed and your not waiting for the resin level to "catch up" to the next layer.