IMO, for bullets meant for up to 1000 fps, the Lee lube sizing kit using liquid Alox will work fine as will the Lyman 450. With the Lee, bullets once sized and coated with Alox need to be set on their bases to allow the Alox to dry overnight. The Lyman 450 will both size and lubricate bullets without a need for a drying period. It boils down to budget and convenience. You can make good bullets either way.
If you are shooting bullets in excess of 1000 fps and using the Lyman 450, a heater would be a good choice as you may be working with hard lubes that need to be softened to flow through the lubrisizer. Also, for higher velocities, using either Lee or Lyman equipment, suggest you consider selecting a bullet with a gas check otherwise you may have leading problems in your barrel.
A casting kit list for a newbie can cover a lot of ground. You can research this site and come up with some good suggestions as this has been covered numerous times. Lyman offers a beginners kit for new casters or you can put a kit together from components. If you have specific questions, do come back with them as there are serious casters here who are willing to help. Hope this helps.