It's not easy, sure, but I don't think that anything worth doing is truly easy.
Thank you! That's the point I've been trying to make over here
Oh no way! Learning Spanish beforehand made Latin verbs etc. a breeze (even though I still make embarassing errors). I even think it would be easier than French because if you're self-studying, you've got to learn French pronounciation yourself. It all depends what your goals are and what you want to do with French and Latin once you learn them.
I'd also like to recommend that learning Italian, before any other language when starting from English, is absolutely the best way, particularly within the Romance languages. Italian to Spanish is much, much easier a transition than Spanish to Italian, or any another of the Romance tongues. Also, French and Italian share innumerable commonalities among themselves; in comparison to Spanish or Romanian or any other, they are practically the same language. Spanish has numerous idioms which are rather pecular when compared with French or Italian — or even Latin, for Italian is, of course, the closest of the living languages to Latin. Heck, most of the infinitives of verbs in Italian are exactly the same as they are in Latin, with, if at all, only minor alterations in meaning.
I recommend Italian before Latin because it is much easier than Latin, and yet is a perfect bridge, especially for adult or young adult learners, from English into Romana. Also, Italian has many more cognates to English words than Latin, as Italian is very close in diction to the French which has given us most of our vocabulary. Italian is incredibly helpful to comprehending the othewise seemingly illogical differences between Latin and English vocabulary.