I find it depends on the molds and how they like, or take the heat. Also the bigger the holes in them and the more of them the less heat it takes to keep them up to temp and dropping nice clean bullets.
With most of my MP 4 cavity brass molds I run between 725 and 745 depending on the fall off from the pins. If they are a bit sticky I ease the temp up 5 or so degrees at a time until things start falling like rain.
With my aluminum molds usually around 680 for anything with a 4 in it and around 700 for the 357's. That is for the 6 bangers though. I have a couple of double cavity ones however I have to bump up to around 715 - 720'ish for them to stay hot and keep things rolling.
I don't run a fast cadence either, just nice and easy, pour, sprue cools, cut, dump and repeat. However long that takes is how long it takes, I don't rush things. I guess thats why I like the higher cavity count molds so much verses the double or (ughhh) single cavity ones.
Your starting point will be a good one, for you to get familiar with things. Once you do however, you will find yourself tweaking the temps. Be sure to take some notes while you do as well. It sure is nice to hit a sweet spot and dump 20# worth of bullets, but then come back several months later and not remember what temp you were at.