Please share your experience...

My wife's English skill is in elementary level so, I do not think she can manage to get Band5 or so in IELTS. During my EOI I did not claim points for her M.A. degree because of English skill level...and I chose to have ESOL for her.

Just worried that how much my application will be impacted due to her English skill?

ITA package says ----

Evidence of the English language ability of all applicants aged 17 years and over, unless the secondary applicants are pre-purchasing English for Speakers of Other Languages (ESOL) tuition, e.g. IELTS test report or evidence to prove your statements in D1 and D2 of your EOI.