I'm not being a smart@ss.
A. Ultimately, you won't save money.
B. There is always something else you'll need
C. It won't stop with one caliber.
D. It will give you great satisfaction
That said, a solid single stage press, a set of good dies, a scale, a powder measure, a trimmer, a deburring tool, a loading block, a good loading manual, a clean, solid bench, and the desire to be careful, methodical and not a hotrodder would be a good start.
Nothing against LEE, but scales, measures, and manuals aren't their best stuff. Can't go wrong with RCBS, Lyman, Hornady, Pacific to name a few. A Rockchucker press can be upgraded to progressive if you want later.
Casting is another thing altogether.
I've been doing both since 1955 and can load for about thirty different cartridges, cast for even more, and have taught many how to do it. Somewhere in my archives, we moved a couple years ago, is a booklet I wrote about the subject.
I'd start with the latest Lyman reloading manual and a Rockchuck starter set and go from there. My suggestions are way over your budget but if you start with the best you won't have to cry later.