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As I read those tables the longest span you could get away with for for 16" TJI 110s at 19.2" spacing and a 20psf dead load would be 20 feet, 1 inch to achieve L/480 deflection. You may have a little less dead load than that, but you also don't have an accurate joist span. "Around 20 feet could be a bit more or a bit less, eh?
But that's still only buys you a deflection of L/480, which is a long, long way from L/720. And you've still got a 19.2" joist spacing instead of the required 16" or less.
Again, it's your floor and your stone tile and you can tile over whatever you feel comfortable with.
My opinion; worth price charged.
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