For me, I enjoy researching loads in my manuals. It's a part of reloading to me to find a load, check out the specifics (velocity vs. powder charges, bullet weights, etc.) and looking at a few different manuals. I've been reloading long enough to have an idea of what components go with what powder to give me a decent load, but I will always check a manual for final decisions on pertinent data. I tied plated bullets, about 1,000, but they have no benefit for me over my cast or jacketed bullets. But for a newcomer, it's best to find a load then buy components...
It's pretty safe to use 44 Special loads in 44 Magnum brass, I've done it many times. Two things to remember; the listed velocity/pressure for the Special data will be higher than what you'll get in Magnum cases. Also, starting loads for Specials are OK in Magnum brass, just don't go below them as there's a possibility of a squib. I've been reloading 44 Magnums for quite a while and I don't think I've used any Special brass in at least 20 years...