HomeschoolDad:
classically-educated people
I did my undergraduate in Classics, and I have relatively advanced fluency in Latin and Greek (sufficient, at least, to write original prose compositions in the style of particular authors), along with functional fluency in Classical Hebrew and Classical Syriac.
I think it’s great that the OP wants to read the Vulgate in Latin, and I would encourage anyone with the time, patience and self-discipline to learn Latin and/or Greek. At the same time, I’ve witnessed many instances where an overly-fetishised and overly-romanticised image of
Urbs Aeterna (i.e. Rome) or τὸ κλεινὸν ἄστυ
to kleinon astu (‘the glorious city’, i.e. Athens) leads to fantastical perceptions of the language and overly-ambitious expectations of the language learning process. Many times people simply burn out when they realise that fluency isn’t attained in one year of reading one text (i.e. the Vulgate), but over a decade or two reading anything and everything.
In the case of the OP, he noted that he’s at the stage of memorising declensions and conjugations, which indicates that he’s very much a beginner (I was expected by my university to have memorised morphology in the first month or two of study). Fluency is still
years away, and his (over-)enthusiasm ought to be tamed, corrected and focussed into something more sustainable.