sweetening home made soya milk

[kat40]

I've just bought a soya milk maker and it's fab but i'm new to making
my own and i wondered if there were any experienced milk makers out
there to advise me how best to sweeten the soya milk; i've ordered
some brown rice syrup as that seems to be the natural sweetener of
choice but how much to put in?
any ideas or recommendations to use the okara? [leftover pulp]

thanks

kat40