My plan for avionics/instruments was originally going to be just minimum legal VFR + a radio, transponder, and blind encoder. But, the ADS-B mandate makes that plan unworkable for me. I plan to finish my build by this time, 2018. So, I might as well plan to for this eventuality now. After all, I really want to be able to penetrate class-B veils when the need arises. This means now, I must have a TSO'd position source. I'd like to fly in Canadian airspace. So, now, not only do I need a TSO'd position source, it must be TSO-166b. Now, it seems illogical to have this great panel mounted GPS and not have ADS-B "in", right? So, now I need an ADS-B reciever. You see where this is going? What are some of you guys' thoughts on this subject as the ADS-B deadline approaches?