You need a means to control the temperature, so either add in a thermoter, or forgoe the cast iron pot and dipper and get a lee bottom pour furnace.

The lee 6 cavity molds are a better design than the 2 cavity molds, but it takes some experience to cast a proper cadence to get good bullets from the 6 cavity molds and not get frustrated with the sprue hardening up and breaking the sprue cutting handle.

Hence start with the 2 cavity lee mold. I know lots of people like to bash lee molds, but I've yet to get a bad one. In 35 cal I've used the 105 swc, 158 rf and 158 swc, all have been very accurate. The 105 is my current favorite for very mild recoil, good accuracy, and getting as many bullets as possible out of a pound of lead. I'd still like to try the 125 rf but have had a tough time finding someone that has the 6 cavity varient in stock.