1) Enemy stats obviously vary by enemy. If you look at the Wiki page for Greater Colibri and Mamool Ja Blusterer, you can find the stats you've requested. MMJ Blusterer is a pretty good approximation of a Dynamis monster, as far as I can tell (obviously barring job-specific variations). Abyssea is a different beast, as you have to deal with monsters leveling up and down, but fortunately dDEX becomes irrelevant quickly. I figured out that a level 90 monster had . . . I want to say 77 VIT one time, by adding and subtracting STR from my TP gear on Dancer without a STR Atma in La Theine.
In general, if you assume Stat=.85*Level and Defense/Evasion = Level*4 (before monster job traits), you aren't that far off.

2) The first hit of weaponskills gets a significant Accuracy bonus. The rest of the hits do not, but have the hit rate you would predict just by comparing your accuracy in your weaponskill gear against the target's evasion. It is not possible for any individual swing of the weaponskill to break the 95% hit rate cap, though your odds of connecting with at least one hit of a multi-hit weaponskill can be substantially better than 95%.