Níl a bhuíochas ort.
Your are using dialect forms, so I'm wary of correcting you: but
on my own is "as mo stuaim fhéin" (unless you mean "on top of my own person
)
a Aonghu
is [In my opinion: others think the vocative
ought to be "A Aonghusa"]
cheana
I'd say
Tá súil agam go ndúirt mé é sin i gceart.