Only difference between FO and SFO is number of stripes on the sleeve - one pay scale for all rhs. Pretty much all of our new joiners have masses of experience inc lhs.
There is a level of experience to acquire the third stripe but tbh I don’t know what it is.
Not sure I’d give up a current cmd, though I don’t know where you are atm.
Not sure if this answers the question or not.
rgds