From the sound of it you seem to be taking the same road I did when I started reloading. You will come to the same conclusions that I did. The only items in the entire Lee lineup of products that are truly a good value are their reloading Die sets. Every other item is not worth spit.
Lee Perfect Powder Measures, junk that I replaced with an RCBS Competition powder measure which is worth all of the 168 dollars that it cost me. Hint, you get what you pay for.
Lee Safety Scale. It will work, barely. However it will also lose it's zero gradually if you have any vibration in the bench it's mounted on. DO NOT PUT THIS SCALE ON YOUR LOADING BENCH. I replaced mine within a year with an RCBS 502 because it won't lose the zero setting but still keep my balance scale on a foreman's desk sitting opposite from my reloading bench.
Hand primer. Don't waste your time with a Lee hand primer, instead get an RCBS Universal hand primer. I have two, one set up for Large primers and the other set up for Small primers. Note, you can prime either Rifle or Handgun on an RCBS hand primer.
As for the electronic scales, the zero will drift so keep in mind that what you see may be as much as 0.2 grains off the actual weight. Basically use them to rough in your weight and do your fine tuning with a Beam scale.
Powders, the vary a lot in repeatability from a volume based powder measure. I have take the time to run capability studies on all of my handgun powders and to a large extent that has driven my choice of powders for loading. For example I load 38 special and high energy 9mm with Vihtavouri 3N37 because the Standard Deviation for this powder is 0.07 grains. For 357 Magnum and 300 Blackout my choice is H110 because the SD is only 0.04 grains. BTW, H110 will completely jam a Lee powder measure because it's such a fine grained powder. Powders with a 0.17 grain SD are rather common and almost all are powders originally intended for loading Shotshells. These are Unique, Clay's, Universal, Longshot Titewad and some others I don't remember off the top of my head. I use Longshot in 40 S&W because it's great for building loads such as a 165 grain Gold Dot at 1150 fps. Due to it's variability every single charge is hand trickled to weight on a Beam Scale.
Finally, I'm a 4 gun Skeet shooter, which means I compete in 410, 28, 20, and 12 gauge Skeet events. Practice means loading about 10,000 shotshells per year. So all you handgun shooters please don't use our precious shotgun powders for your handgun loads. There are alternative such as Accurate #2, 5, 7, and 9 that meter wonderfully so please leave the Unique, Universale, and Longshot for us shotshell loaders.