Two things to note about your order:
The Evods are not genuine Kangor products. That said, I've got one and it works just fine, and I'm going to order a few more next time I "need" some things from FastTech. Kangor replacement coils appear to fit these clearos, but I do not know that for a fact. The screw in just fine, but I don't know if they make a proper seal or if they power up. (They probably do, but it's something you'll want to research a bit more before buying additional coils.)
The VV battery is nice, but the button sucks. The good news is that additional switches are available for $0.25 each plus shipping costs (very reasonable) from Sweet-vapes.com, or for .85 each and free shipping from Hoosier Vapes. See my post here for further details.
http://www.e-cigarette-forum.com/forum/ego-type-models/432321-ego-v-soft-button-repair-replacement.html
ETA: You may not experience the same issue. 1.5 weeks after I had that battery the band broke on one side. I was able to tape it in place and use it for another week, at which point the button tore off completely. Problems aside,
I do like the battery and am glad I have it.
FWIW, the Evod coils can be rebuilt if you really want to save money down the road. I've bought all of the necessary materials, but have yet to try a rebuild. If you need to replace a coil, rinse and dry the old one, and drop it into a box for a later date.