I see it as this pretty much;
Apocalypse, Wolverine 3, First Class 3 going into X-Men 5(DoFP was FC2 and X4), and then Age of Apocalypse.
IMO, when they make an Apocalypse sequel with young Scott/Jean/Ororo front & center, there won't be any going back to OT(excluding Wolverine). Kinberg recently hinted that following the younger "more traditional" team will come next. Stopping that progression to go and make a couple more OT films seems really really short sighted and comes off as backtracking from what DOFP accomplished.