@Andy *********
the seasoning has NOTHING to do with the initial 90 day Non-O visa (in fact only a few offices require those funds seasoned, most just need it in the account when you apply)
The 2 months before and 3 months after comes into play with the year extension only
SO
whether you decide to go with the 3 months from the date you apply for the year extension
OR
whether you decide to go with 3 months from the date the extension takes effect is your choice.