Wow your going straight for the 50 1.4...
Ever considered the Sigma 30 1.4?
I'd actually recommend a bigger dry cabinet. I bought a 60L as my first dry cabinet, back then it seemed so big. But now abt 4 years later, its not big enough haha.
If your going to put a cheap filter, then there's no point in having a filter. Putting a cheap filter is like buying a sports car and then pump in 92 :dunno:Why not consider using this instead http://www.artworkfoto.com/mcuv.html
Their reasonably priced and their multi coated.
i am using that. i paid $21 for it. OMG