player edge of a double deck game

Double deck, p=0.6, DA2, DAS, h17, insurance offered; using HL or KN count, with betting spread 1-5, what's the approx expect % return of this game? (assuming perfect play)

This is a typical Vegas double deck game offered. I don't have any simulator with me, but I estimated the player's edge to be around 0.7% using some numbers from books I bought.

Can someone comment on my calculation?

Thanks