It seems like a mostly fair trade but looking at a tradability standpoint, I don't really want to trade cheren for those cards. Is there anything else you saw?
Would this work:
My:
1 FA Ho-Oh EX
1 FA Zekrom EX
1 Tornadus EX
1 Registeel EX
Your:
1 FA Cheren
1 Landorus EX
LMK if that's better or not.