from the floor to the top of the seat is 37 3/4 inches
From the floor to the top of the handlebars is 35 1/5 inches.

Would it make a difference if I was 5'11" and 180 lbs, or 5"11" and 260 pounds?
When I stand over he seat I can not lift the bike one inch.

I have not made any adjustments to the bike.


Ultraman, what does this mean?

You can make it work but you might need at least a 12 cm stem (IMO 13), all the seat back you could get and flip the stem (not looking up), do not slam the stem.