my thoughts, 0.6 for the dead load and soil cone with no factor of safty for overturning, 30 degrees for the soil angle (maybe 45 if I was desporate like a crack addict and had a good geotech dealer). Allowances for footing "suction" is pretty wild and not designing anchor rods for the 0.6D +...
I think some of the trouble you are having is that software really doesn't model flexible diphrams correctly, (or atleast not how it would be done traditionaly with paper and pencil, ie. "Semi-Rigid" is not flexible in any software package). And as always there is no such thing as a turly rigid...
My understanding is that steel supported on wood is allowed (but frowned upon) if you account for long term creep and defletions of the wood support.
Masonry supported on wood is generally not allowed, but there are certain exceptions described in the IBC.