$5NL sng marginal push?

[L_N_J]

I played a best of nine set of heads up stt's on UB with my housemate, one hand I have about 650 chips, blinds 20/40 and going up to 30/60 in about a minute. I push J9 suited and he believes it is a -EV play. I think this is always +EV given my M and the raising blinds. Chances are he will fold and I will add nearly 10% to my stack. Obv he has tens and busts me and goes on to win 5-4! Please clarify here as my M is slighlty above 10 so goes above the pushbot chart.