Definately get the hyper caps if you can. I personally have never heard a good 391 tape, but I am sure they are out there. And skip the cables and put money into a pre first! Also, I don't have an answer...but what other mics in thise price range have you been looking at? Also, since you seem to be on a mic search here, try listening before buying, only your ears can tell you what you like or dislike. That said, have fun...and always look for the best deal!
My 2 cents
Daryan