Banking a DD BJ game in California

Can someone help me what will be standard deviation will be for banking an almost 2% house edge game. Wizard of Odds calculater without the deck penetration.
Rules are
4$s per banking the game
The banks min bet is $50s
Double Deck
50% deck penetration
NO Resplit
NO DD after Split
Dealer hits on soft 117
BJ pays 6:5
Surrender yes.
What should my br be?
the cards are shuffled with a random shuffler and put in the shoe!
Whats the casinos edge?
should i only let the banker bet only one spot?
thx alot