@superflystud (sweet name btw, I believe it too
)
The IT FS spam spec is currently 21/50. You do indeed do it in unholy presence, but you have the rotation off. In order to get an ITx6 spam you have to have death rune talents from both blood and frost. I'm not quite sure where you got 4 IT in your first rotation since you don't start with 4 frost runes, but the basic rotation goes like
OB-OB-BS-BS-FS dump (first one wont have IT up, sets up all further rotations though)
ITx6-FS dump
That's the basic format, if you have the FS and IT glyphs then you may need to unload a few more FS between the 6 IT. It's a fun spec, simply spamtastic. It will still be viable post-patch, and the buff to FS will only help it. That last point in blood may be better spent on HB for rime since HB has gone so far down the frost tree.