FP with AP - offsite to onsite, how many days can I book?

[biochemgirl]

This is my first WDW AP and we will be visiting a few times over the next year and I find the limited number of days to book FP difficult to schedule around. I get that I can only book 7 days of FP with an AP unless I'm onsite. But what about this? I have a trip in March 2019 where I have 5 nights at an offsite timeshare and then 4 nights rented DVC. Could I book 10 days total with 5 days starting before my onsite reservation and 5 more days under a reservation? I already know my booking windows will be backward with the DVC dates opening at 60 days.