Well with the new sea routes it only takes 4 days travel for morek to get there. so just over a week for a refit if everyone moves when they are supposed to. so not too bad and the kcost is minimal (about the same as coming from astrum on the old sea routes)
I would imagine that astrum could get there in 2 1/2 days so they would have less than a week refit time (faster than the old sea routes)
How are they getting back?