Okoye has hit the UKA Q this season, at the DL in Doha. The current form criterion says athletes have to be "at or near" the standard between April 1st and June 30th. So he has done that. He's also been "near" on other occasions.
Obviously that criterion is there to give them an out, so to speak. But I don't think he's that much at risk.
Personally, I'd take everyone. But even if that wasn't going to happen, of those likely to miss out, Norris, Purchase and Hunt in the 200m are no brainers for me.
Hunt being in the 200m means that you can select Lansiquot in the 100m with no issue as well as Henry and Philip in the relay squad. Which allows Dina/Daryll more rest if they get to finals. As it is, assuming that we select Lansiquot, only 2 of the 3 others would be selected. Which also means we have to use one of Daryll or Dina in the heats (unless we use an out of form Bianca Williams).