I can see where you're coming from and this is my last word on the subject (and I hope you don't mind me butting in...) as you're an adult and you've done your sums.
Looking at it from purely a money point of view for me the Sony and Fuji kit is more or less the same cost. Sony = (A7) £2,700, Fuji (XT1) = amazingly £2,900. Note that this is just a body and 35, 50mm (equiv for Fuji) and kit lens.
For you it works as you bought the mega high end Sony kit but I do think that to make it really work financially you need to remember why you're doing this and keep the enthusiasm and GAS under control.
Good luck with it