So if I understand correctly : if we want to install the fuel tanks we wait a month for a place at the shipyards, and then it takes 2 weeks to rig the tanks, and then a week of travel, twice, to reach a handful of planets? Total 8 weeks?
Why don't we jump right now, even with an empty cargo bay to Reacher, refuel at the gas giant and re-jump if it's too dangerous to stay, and start to do business again at Vinorian? Total = 2 weeks! :)