with Davey not being in the team id think it would be likely that BJ will start

To be honest, I would actually have JD playing hooker, move Cooke to 13 and leave Obst at scrum half for whole game. It's too hard to do the kicking from hooker. I'd play BJ if he is fit.
I think I'd drop either Fergi or Henderson to keep them fresh for Monday so we have a worker.

1. Blaymire,
2. Blanch
3. Murphy,
4. Millard,
5. Morton,
6. Jeffries,
7. Obst,
8. Tronc,
9. JD,
10. Moore,
11. Morrison,
12. Henderson,
13. Cooke,

14. Korkidas,
15. Leo-Latu,
16. Kirmond.
17. King

So Gleeson and Ferguson to miss out and play on Monday

Murphy
Blanch
JD
Millard
Morton
Cooke
BJ
Tronc
Latu
Korky
Fergie
Henderson
Morrison

Moore
King
Obst
Kirmond

Don't think he'll go with this, but I'd leave out Gleeson and Blaymire

Got to go for the 2 at home vs local rivals, damage limitation at Pie Eaters then clear Quins in cup. 6 from 9 & 5th round CC a good return on early season efforts. JD & Gleeson to miss out vs Cas IMO.

Is there a chance that Tronc won't play like happened with the ??????

Not sure what you mean by that mate.
Tronc wont leave until after the easter period at the very earliest.