Thanks for all the feedback. Right now, am thinking about DEN-FRA-LIS on LH PE (for the DEN-FRA leg) versus DEN-EWR-LIS on UA with waitlist for J for roughly the same amount. I'd go DEN-EWR-LIS even though I hate EWR if I had confidence the GPUs would clear but am looking at the LH route through FRA in PE as more of a sure thing. The other thing keeping me from pulling the trigger right now on DEN-FRA-LIS is the prospect of Y on the A321 from FRA to LIS. Any experience with the LH Y seats on the A321? I wish I could find a way to at least price a ticket with DEN-FRA in PE and FRA-LIS in J but can't seem to do that at UA, LH, Expedia, or Orbitz (and really don't want to split the ticket midway).
Will be booking J on TAP for LIS-TER-LIS separately.