I dunno how spokes are measured. Going by sheet metal gage is more accurate I think. My 14g spokes measure at .078 but sheet metal gage charts say 14g should be .074. They also say 11g is .120 and 10g is .134. I think 12g should be plenty. I run a 48 spoke rear wheel with 14g spokes on my 212 build and I have had no problems since I put the chain guard in, cause the chain was jumping off and eating many spokes at a time. Since then I've only broken two spokes on opposite sides when I had a hard lowside crash at about 30mph and been riding it like that for approx 2-3 months. Also I hit a hard bump and it looks like my 32 spoke 14g front wheel needs truing, but if I had a shock fork I'm sure it would still be straight.
Your wheels are gonna get a lot heavier with much heavier spokes, and the ride quality is going to suffer.