Keep in mind that higher output alternators don't put out any more at lower RPM. They have a definite "curve". If you wan't more alternator output at lower engine RPM try a smaller pulley.
Some do and some don't You have to look at the individual curves to find out. SOMETIMES, some of the "medium" range alternators put out better at low RPM than the heavier ones, and fall off at higher RPM. This is alternator shaft RPM, has nothing to do with pulley sizes or crank RPM.
