Honestly?
If Henson has aspirations in MFS, he needs to think of going 157lbs, to prepare for 74 KG (~163lbs). I don't see him making 65 KG unless he takes a year off to shrink his body - much like Retherford did after he graduated.
I would be okay seeing Henson or Miller anywhere from 149-165 and Hipo at 157/165lbs. This puts Church out - unless he heads up to 174lbs, which would put Wright out - unless he heads to 184lbs.
Imagine Church doing 141 - 165 - 184
I don't actually see Henson going 165lbs, though. Not with Monster Mitch there.
Edit: Until the season started, Ethan was slotted in at 149lbs and his brother was slotted at 157lbs (up from 141lbs). The most logical option might be Miller - Henson - Hipo in that order.