Thanks for posting pics! Great bike!
I got an 800 Antelope a few years ago for cheap from a co-op and I've been trying to figure out what to do with it. I'm thinking in town and trail cruiser with riser bars kind of like what you did. Mine is a little older than yours I think (1989) and has the oval "Biopace" chainrings up front with cantilever brakes front and back...all still working perfectly and well taken care of by whoever was the previous owner These things are really solid!