First time posting so I hope this is the right place to put this question. I’m going to build an 8’x8′ shed on some land I own up in NH where there aren’t any code inspectors to review my work so I’m just looking for someone to give me some feedback on my plans for the structure floor. 
Plan (attached mockup from sketchup)
    – four 6×6 posts attached to sonotubes 56″+ deep 
    – doubled-up 2×8 beams set on the 6x6s notched and secured with 4″ ledgerLOK screws
    – 2×8 joists 16″ on center attached to beams with joist hangers 
    – joists on ends don’t get joist hanger, instead they also rest on the notched 6×6, my math gives them 2″ of support from the 6×6 underneath 

That final bullet is what has me most concerned with this plan. I would prefer not to sped $100+ on special simpson connectors for those two edge joists so I’m hoping the 6×6 would provide enough support underneath and then I would just toe nail a few 3″ deck screws through the joist into the beam. 

Plan is to build all of this out of pressure treated lumber and use two sheets of 3/4″ 4’x8′ pressure treated plywood for the deck then just frame the walls out of SPF 2x4s with a shed roof and T1-11 siding. 

Thanks for reading!