I agree, the waiting 4-6 weeks is going to hurt, maybe they can work out some sort of plan where the first group or so who ordered could get their steel earlier.
From reading the plan, models will be in the store for that long, but I don't think they'll be ready to ship at the end of that period. I expect delivery schedules will depend a lot on civilian and military order volume, but I'd be surprised if there wasn't additional time between runs so that production can catch up with demand before the next cycle.