I've got the same problem as 4holer, timing couldn't be worse June 25-29th. I'm also moving although within the USA.
A bit of advice from a long time ex-SVA Captain...do
not turn down the scheduled interview...you may well not get a second invitation.
Unless management there has changed their stripes (unlikely) they will not take kindly to procrastination or delay.
Having said this, I turned down repeated invitations in the late seventies, until they raised the salary...however, in those days, experienced heavy jet Captains were few and far between.
Not so, these days.