Thanks!
This might get a little long for a suggestion, but here I go...
I've been slowly working on a rewrite that would try to eventually accomplish the following:
* Establish a loop (if possible) of clusters of rare stations based on criteria like maximum loop distance (200ly say, beyond the optimal profit range), maximum willing jump distance between clusters (like 90-120ly, something near optimal profit distance) or a minimum sell distance (such as 140ly or so), and a maximum number of stations to visit.
* Calculate along the path to account for reachability and try to determine which stations to stop at to sell specific items we've picked up when the optimal/chosen distance for profit is reached.
* Ultimately try to end up either near our arbitrary starting point or near another cluster.
From what I can tell from a fair bit of poking around no other rare route calculator can do all that with one tool efficiently without taking ages like TradeDangerous can. So far, I've been able to create several groups of rare clusters based on criteria/profit. I'm still working out how to connect clusters in an efficient way using TradeCalc, but Python isn't my main language so it's taking me longer than I expected it would.