MP / PIE Formula

[Yonko]

Do you have any idea what the SMN multiplier is.

Using your SCH formula I get the following

Actual Piety Additional Total from formula
3012 214 1619.98 3149.98

Assuming the same base value as SCH the multiplier should be ~6.92523. It is possible that the base is different for SMN but it shares the same class as SCH so I would expect it to be the same.

Also where are you getting your base values from?

Looking at the HP formula found http://valk.dancing-mad.com/tables/attribute-table/ (scroll to the bottom) I'd think there is an overall formula.
For reference HP = Base HP + (14.5 x (VIT – 202))
And Base HP is 85*(class/job mod)