sounds like a great plan. if you prefer (and subject to any discounts available if you buy all 160 pts in one contract), you might want to consider buying the contracts at the new resort in smaller increments, to make things easier if you decide to sell down the road...
But you can transfer and book at the 7 month window? Just asking because we are more than likely buy into another resort to add to our current OKW.
it occurred to me that this can get a little more complicated. just FYI if you're curious:
if you add-on a contract of the same use year month but a different resort (say, VWL), i believe you can pool the points at the 7 month window. so if you want to add an extra night at your new VWL home, but are 5 pts short, you can (at 7 months out, subject to availability) pool your leftover VWL points with 5 OKW points to book that extra night...without needing to use up a transfer.
(if you buy a resale contract with the same use year month, i believe you can request that
DVC link it to your current "master" contract under one membership number.)
OTOH, if you buy a resale of a different use year month (or buy another 160 pt contract from DVC with a different use year month), you would have 2 "master" contracts and would need to use up your transfer to pool your points as described above. alternatively, you could borrow 5 VWL pts from the next year to complete the transaction at 11 months, or bank your leftover VWL pts into the next year and wait till 7 months to book the entire extra night with OKW points...
if i have confused you, maybe you could
read this link to a related post...