good luck with Your project!
Your line-up looks very impressing! Maybe too impressing.....
in order to avoid a demoralizing effect, I suggest that You make a list and plan on paper, with a rough schedule, and lock away all units but the one You are working on ad the one You will be working on next.
Make sure You look at only one WIP of painting and one WIP of being assembled and basecoated, but have all the time unobstructed view of the ones that are finished. The sight of an unfinished mountain of lead might be disheartening. Plus, You should always stay focused on the one unit You are painting, and nothing else.
unless of course You are a quick and performative painter, in which case You don't actually need the challenge.