With that many UR to play with and time to accumulate a bunch of TYP to go with them, consider the possibility that the best use of points may be cash fares via the UR or TYP portal. Saver first availability has been pretty thin, and first class fares have been running quite cheap, especially on United ($1500ish/RT if you're flexible). No guarantees that will continue into next summer, but worth keeping in mind.