Pants, you need to know the difference between these type of odds

1. Actual odds
2. Effective odds
3. Implied odds

1. You are getting 2.5:1 on the flop call
2. You are getting 2.5:1 to see the turn, however, your effective odds take into account both the flop/turn calls. This has to be taken into account b/c your hand will not improve until the river.
3. Implied odds. This really depends on the strength of your opponents hand. Against tight players who would only lead this flop with 2pr+ from the SB your implied odds might be great b/c your draw is hidden. However, against a loose opener from the SB (say someone who would lead with J6o) you have very little implied odds as both of your hands would have to improve and he would have to stack off light