Weird saves, this is a good optimization challenge, though maybe a little luck-based Solving the puzzle is thoughtful! Good elementary. I was 2 off, in several ways before seeing the right thing. Enjoyed it, a lot. Though there's a large portion that goes unused, more of it is relevant than you would expecy, and the important part of the level is pretty enjoyable :))) HAHAHAH, enjoyed this one. Got tricked, at first, too. :)))) Actually a somewhat interesting level. Nice design and a decent path. 
Insights