Hankus,, I've been casting my own bullets for several decades. The selection, the styles, and such for a .45 cal bullet are wide open.
While I do own some Lee molds,, I have not used the ones you are looking at. But I have chosen the build a good selection of MP Molds for most of the calibers I enjoy.
Yes,, they are by far more expensive molds when compared to Lee molds. But the quality, the versatility, and quality of bullets I get from them,, makes them worth every penny.
A 4-cavity, brass mold,, with all the pins,, allows me to cast solids, cup hollow points, deep hollow points and Penta hollow points,, EASILY!!!!!!!!!
I'm currently enjoying the mold; 454-640 with the pins,, that casts a 280 grn solid. With a deep HP or the Penta HP,, it's about 265 grns. My solids,, I'd use on bear, elk, or whatever. the HP's,, deer will drop decisively.
So,, while you may be seeking a Lee mold,, if you are wanting a truly top level design & top quality mold,, maybe look at MP Molds.
As for the use of Green Dot,, I can also say I've not used any in decades. I study several loading manuals,, to find a pattern of what's most accurate,,, as well as offering a good range of loads. Then I select a few powders,, which seem to stand out as the "standards" for most,, and begin working up my loads. With SAFETY in mind,, I try several loads,, to find the most accurate load MY gun prefers. Accuracy is my top concern,, followed very closely with; "Will the velocity of this load make the bullet perform as intended?"
In the .45 Colt,, several powders have always been the mainstay of many handloaders. Unique offers a good all around powder choice for mild to moderate loads. 2400, HS-6, IMR-4227 are a step up in power when used. Green Dot's range of use is a bit more limited from what I can remember in my research.
I would also politely suggest you consider powder coating your cast bullets. It's NOT hard,, requires a minimum of equipment, and gives great results. Bare bones basics,, powder, a plastic container with a lid, (there are different plastics used, but a Cool Whip or most of the butter tubs work very well,) some air soft BB's,, a toaster oven, and some non-stick aluminum foil for the pan in the oven & you are good to go. Just dump a bunch of bullets in the tub, a handful of BB's, and powder. Close, shake all of it around for 1-2 minutes,, open & dump the bullets into a plastic colander with holes large enough to allow the pellets to fall through over a plastic tub. Shake the excess powder off & dump the now coated bullets onto a foil covered pan, bake in the toaster oven for 15-20 minutes at 375-400 degrees.
Size & shoot.
No messy lubes, nowhere near the amount of smoke that's associated with traditional lubed bullets, and often,, a slight increase in velocities over lubed bullets.
My suggestion would be to get a mold,, cast a bunch,, then find a few powders available in your area that fall into the range of use you intend. After that,, have a bunch of fun experimenting,, and finding what YOUR gun prefers.