STALLS STANDING are the best tickets by far, unless you have weak knees in which case sit upstairs in the circle far from the stage
The Kings Rd is on the wrong side of the river.(north)
'Embankment' is the south bank.(unless you mean Victoria Embankment or some other embankment, clairification needed? but if it is) The tube station there, Waterloo is 15/20 mins to Brixton. The tube link fom the Kings Rd is approx 45 mins.

