Actaully, No. Again. 14 is the fact of the Gentiles coming then James says, this is in accord with the following 1) restoration, 2)gentiles.
v 14 is James' description of Peter's description and not a part of the passage he was quoting, which (again) states that the order of things is FIRST the restoration of david and THEN inclusion of Gentiles.
Nope --- "After this I will return" --- After what???? --- After visiting the Gentiles [nations] to take out of them a people for his name. Was God finished visiting the nations and taking out of them a people for his name when James said this in 49 AD???? Nope. It was ongoing. It started at the House of Cornelius and it is still going on today. We haven't reached the "after this" part yet.