We have no plans to use 4 LO at this time, our plan is to let TOD do it's thing. We might decide to use 4 LO after testing.
Good points on the compatibility of the tire sealant and bead locks, I've sent an enquiry to both companies.
Good point on tire pressure, we need to test this.
Regarding when we will test this in the desert, that depends on whether we are selected as one of the 40 teams that go to the qualifying event in September.
We are currently testing in private ranches in Central Texas. Provided all goes well and we advance to the next round, we will be doing longer test runs in canyons in west Texas during the summer months and in California in September; the race is October 8.