Hubbie of Teacher

Hi, New to this group. My family and I are currently living in Perth under my visa, 402. training visa. I was suppose to move on to 457 in April but after the changes this was scrapped. The 402 visa expires in Nov. My wife is a secondary school teacher from UK and has 70 points in the EOI. This was submitted last week. Has anyone got any experience of how long it takes for the invite to apply? Is 70 points enough? Reading the info it seems there is a ceiling of 7500+ for secondary teacher but only 19 invites this year. Does this mean they are short? Increases our chances? Providing we get our invite and we complete the application prior to Mid Nov we will go on to a bridging visa. Otherwise we will have to leave. Any information greatly appreciated. We have submitted the EOI for 189 visa Thanks