738 at MAN will work well, with 189 seats on offer.
At least there will be no performance issues at MAN. Once the TORA reduces below say 2500m, MTOM is not always assured.
Different beast compared to the 733. Speed are much higher for T/O & landing. Vref30 on the average day about 140 kts mark.
.78+ and FL410 does help.