Strigoi is fine for SAM WS and such, but as a thf you are going to have very low acc compared to 2handers so tping in str ring is a terrible idea. I'm sure you already know dex is going to be better for ws too.
GL with the augs, I spam cheap items and in about 20 i've gotten nothing but -stats and +resistance. I would not waste 150k a pop, but if you got the gil go for it.
While unrelated saw you in a flamecore thread, talking about fulltiming AF on certain jobs... tbh instead of burning B.subs i'd buy decent gear for those jobs, as well as work on homam pants. Anything short of 3acc 20ish hp isnt gonna beat them, not to mention I don't think you can get fast cast which is nice bonus for your utsu timers.