Updating...I'm out. This prediction in retrospect was overly optimistic. Last time I was able to go 5 levels before adding a 2nd medkit, this time it's 3 levels. #21 required 2. That projects out to needing 5 at level 30 alone, and 30 more on top of the 5 I already used. Not worth it when I could just buy a comparable LE, and make it an air unit related to my boost. Add to that the loot drops are worse this time (as others have pointed out), and I have stuff to do this weekend other than being tied to this game.
Good luck to the rest of you. If they come up with an air unit as the grand prize I might consider going through it again, though it is a massive time sink.