Let me think it through out loud. Let's say you have a pretty good map of the universe from probing. You know nearby port types. Let's estimate an average of 3 hops between SxB ports. 3 Hops x 400 Fuel Ore for PWarp = 1200 units Fuel ~= 5 turns in a Colt to refuel. So if you had to first fig any of those sectors, it would be more turn efficient to use a 2 TPW ship loaded with Equipment and test MCIC values from the ship, without completing the sell, thereby keeping the port % where it was. To take this a step further, you should probably have a 2 TPW ship with a decent export range for scouting xxB ports, and a Colt at you Planet's location. Then scout nearby sectors for decent xxB ports in the 2 TPW ship, export to the Colt and bring in the Planet for selloff/buydown.
FC, I have a beta available of a Haggle routine that can do the MCIC derivation as I outlined above. PM me if you're interested, or follow the link in my signature for more info.
It is an interesting idea for a script though... WorldPTrade
+EP+