Boeing only produces NNCs for normal aircraft configuration, in this case Bleeds ON takeoff. You have to use either common sense when you get to the isolation valve/pack/engine bleed step in the NNC or combine the NNC and the after takeoff part of the supplementary procedure.
As for the hold speed, as long as you are at or above flaps manuevering speed, you can make turns with 25° (+ 15° overbank margin) of bank. And as long as you are at or below turbulent air penetration speed, you are in the optimum range as far as the turbulence goes. The Bill Bulfer's 737 FMC guide says the "best speed" on hold page is higher of minimum fuel flow (max endurance), minimum manuever or initial buffet speed.