Different close cycles for FA Corporate and Tax Books

I have a FA Corporate book with 12 periods. Looking at the Tax requirement, tax books only have 6 month end close cycles as opposed to the 12 for corporate books. This gives me 2 options

A) Create a separate Tax Book calendar with 6 periods. This will be complicated as now I will have to setup all the categories, methods, prorate calendars and other things for the tax books and maintenance will be a pain

Use the same calendar structure as the corporate book but only close the tax books 6 times an year.

My question is, If I am to implement B, how exactly does month end close work? Usually, we close the corp book, run periodic mass copy into tax book and close tax book. I am a little concerned about the period being closed in corp book and open in tax book.