I'd say make a start, if there are any more changes they will be very minor and should not affect panel lines and basic stuff like that. It is just that it is worth comparing the default skin from the new version when it comes out to this beta version just to make sure nothing else has been added in the meantime.
I can't see anything that needs changing on the I-16 or the Typhoon anyway. However there is what looks like an unskinned white poly on the Brewster.