Got an RX1 for $100. What now?

Hey guys, so unbelievable circumstances have put a Sony RX1 in my hands for $100. An ex-sony exec owns a record shop in my town and had it in there as a sort of "take it off my hands" item when I walked in. Don't ask me why, I don't know either. Regardless, I now have the camera. It has a few scratches on the LCD but the shutter count is under 500 and I could probably get around $1400-1500 for it on ebay (or shoot me an offer if you want it). The ultimate goal is to get an A7Sii and a 24-70 2.8 of some sorts, but I think that may be a little unattainable. I got a GH3 a few weeks ago to replace my 60d, and I got a metabones and a 25 1.7 for it that I can return for a full refund. What I'm thinking now is to sell the RX1 for $1500, my Tokina 11-16 for $350, the GH3 for $400, and get my money back for the accessories ($650). That gives me a total of $2900. I could go for the a7sii, but I would only be left with vintage primes and a vintage tele to work with, and I want a standard zoom as a utility. Should I get the original a7s and a sigma 24-70 2.8 instead? Other suggestions? I've wanted a good full frame body for a long time and I think I have my opportunity now.