Out of curiosity, why are you not using it and why did you buy it in the first place ? I think that those are two questions you need to ask yourself somewhere, sometime... Edit: these questions are not meant to be condescending.. It's more like- is this like a seasonal thing- where the need crops up every now and again; or did what you want out of a DSLR setup change ? Or is it too heavy of a setup- i.e. inconvenient.. To me, it's more out of curiosity.. To you, it should be something that you consider- as I would hate to see you go with a Sony setup- sell your original equipment, only to buy it back again later..
If the Sony is your solution- which is fine by me, I think I'd hold onto what you have for a month or two- and see if the Sony does everything you want it to do.. Then, after you are satisfied- sell it.. give it a new home..
EOS 5D III, EOS 7D,EOS Rebel T4i, Canon 70-200 f/2.8 IS II, Canon 24-105L, Canon 18-135 IS STM, 1.4x TC III, 2.0x TC III, Σ 50mm f/1.4, Σ 17-50 OS, Σ 70-200 OS, Σ 50-500 OS, Σ 1.4x TC, Σ 2.0x TC, 580EXII(3), Canon SX-40, Canon S100
Fond memories: Rebel T1i, Canon 18-55 IS, Canon 55-250 IS, 18-135 IS (Given to a good home)...