I think 1 week on, 1 week off sounds very sensible.
I've seen many students struggle with part-time courses when they do a day here and a couple of days there, and usually these students' problems are solved when they can dedicate an entire week to their training. So if you're planning to do all your training in blocks of an entire week, I shouldn't think you'd have too many problems. It may take you the first half of your Monday flight to get back into the swing of what you were doing two weeks previously... but if you can accept that, go for it.
FFF
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