Not certain if this would help anyone, but I made aSol-Lune BT rewards calculator on google docs.
docs.google.com/spreadsheet/ccc?key=0AmjOnAMt8xWVdE5Oc0htRDRyM0ZBLS00QmRmLVM5S1E&usp=sharing
(there is no link because my account is too new
)
If you type in the Current BT points that you have in the yellow box it will tell you how many times you have to run quest 25-3 to get the next reward. Then how long that will take in minutes then hours. I put 6 minutes per run in assuming I won't be super on top of it (because I am making weird google doc spreadsheets and such), but that can be changed.
This was a really quick thing I threw together, and I don't know if it will help anyone. Mostly it tells me what is in reach and what isn't.