Back online and many thanks for all the suggestions!
@xliioper - thanks, I didn't think of LHR as an intermediate, I will look into this more!
@TTT - yours is even more creative. @bsagator, I have not booked non DL before, is there a specific way to book to get the DL MQD credit?
Definitley would prefer the 350. Thanks @gitismatt!
Thanks again all, work to do!