When you have a mixed award, it is a *A award - that always books into saver category. 50k is good value.
Do you get miles for an award? if so-3x multiplier - 4710 miles x2 = 9.5k ~10k for 89$ does not seem too bad at all.
If for the one way from TUL-SMF. 1419x2=2800 miles = 89$ = 3cpm- better to transfer 50 k to 2 family members right now, as that will cost you 1.1 cpm max with the bonuses. or transfer 25k to them and 50k back to you = 75000 new miles for 800$
No accrued miles on award travel. Sorry, I wasn't too clear on that.
I booked an open jaw reward, so 50k miles deduction for the BOS-PHL-ORD-TUL & SMF-PHX-BOS (3 out of 5 in First)
The TUL-DEN-SMF leg is where I added the 3x multiplier for $89