Ah, let's see: you need a burner, a melting pot, a ladle, some flux, some lead and tin - and the molds, with handles.
You should be able to purchase bulk lead and bulk tin from a local salvage yard (junk yard to many). Or you can purchase from a shooters supply catalog and also from some of the Graybeard sponsors - MidSouth may carrylead and tin bars.
You may also need a reloading manual specific to cast bullets, one that also provides some instruction for casting.
If you have all the other stuff for reloading you are probably halfway there. You may need larger expander plugs for the Moison and the 303 if the reloading dies come with 308 diameter plugs.
It is NOT safe to cast or melt lead in the house with or without kids present. The fumes can become toxic and please do not forget that lead itself is toxic to children and adults. However, outdoor casting may present problems with rapid cooling of the dies and bullets.
If you can score some wheelweights from a local garage or even a local salvage yard you could be considered 'golden'. If you want to add a harder mixture to the casting pot see if you can find a local print shop or two that still uses Linotype for print blocks. If you add some Lino to a standard #2 alloy you end up with a nice hard slug that does not come apart on tough targets. Good luck, have fun and this is one situation where you want to keep your fingers out of the pot..................Mikey.