It's late here so I'll just post a quick note to say that perhaps we should mine the commentaries and writings of many more Fathers to see what they say.
I have to say generally that having been Calvinistic for a while and understanding the position I do not find that it is the position of any of the Fathers other than Augustine who it seems to me had his own personal issues to work out.
That is not to say that grace is not so very important, but it is not seen in such terms as Augustine used, which is why the Eastern Church was accused of semi-Pelagianism, an accusation that is true and reflects the patristic approach as far as I can see.
But lets read the Fathers own words, as I am sure that some at least understood the other possible meanings of the passages.
Best wishes and God bless