I. Yes, Ephesians is our Bible also.
II. This may contradict Trent, but I would need more context.
III. As Roman Catholic as it gets. In fact, the last sentence is an excellent summary of justification: heaven is a gift; hell is always earned.
IV. (a) I don't read this as saying what you claim it says; I read it as an exhortation for adult converts to repent before they receive baptism. Extremely Catholic.
(b) Heretical.
Out of the five propositions you cite, three are perfectly acceptable Catholic doctrine. One may not be (but was within the pale of orthodoxy at the time it was penned!). One is heresy.
So I guess the Scots were 80% Roman Catholic.
Well, I suppose a case could be made that they're at least 80% Catholic of the Augustinian variety -- and that's if you can go along with the "free-will itself also was lost, for of whom a man is overcome, of the same is he also brought into bondage" (quoted from Luther's "Bondage of the Will", or from the Celtic Orthodox? Yup, it's the latter!); I doubt many free-will Molinist Catholics would groove on such a declaration.
At any rate, however, their theology is still 100% Calvinist. ;-)
I believe you are correct.