Congratulations, and welcome to the world of reloading!
You didn't say what kind of equipment you got, they're all good, some a bit friendlier than others. I hope its not a progressive press. You can start out on a progressive, but the learning curve is steeper, and I think beginners should begin at the beginning.
Since your primer and bullet choices have already been well spoken to, I'll speak to something else.
Powder charge in the case. Specifically, one, each.
Very small powder charges have a risk to them, the risk of putting more than one charge in a case, and not realizing it.
A double charge of even a light wadcutter load can wreck your gun, even Rugers!! Wreck as in blow up, burst cylinder, etc.
THINK about your powder charging process, and perform it carefully and with scrutiny. The usual advice is to place all your charged cases in the loading block, and under a good light, look carefully at the powder levels in all of them, looking for any that are higher or lower than the rest. Anything that is out of line with the rest gets dumped and recharged.
My personal method is to put the primed cases in the block, upside down (which shows they are both primed and empty.
Charge the case with powder, set it in the block right side up, and set (set, NOT seat) a bullet in the case mouth. (usually I set the bullet in upside down)
Repeat until you have finished the batch (or the block is full)
This method helps keep you from picking up a case with powder in it, thinking its empty.
I would caution you about the thought of using wadcutter loads for self defense. Penetration in gel tests is a very useful comparison tool for bullets shot into gel. It is not a good representation of what the load will do shot into other things (like people) that aren't made of gel. (like, for example, bones, among other things)
The flat front of a wadcutter is very effective at transferring energy, but wadcutter loads don't HAVE an excess of energy, so the energy shed by the flat point may actually keep the bullet from reaching a vital spot, even if it doesn't have to go through a bone.
Again, gel tests can be impressive, but can be quite different from real world performance.
Again, welcome to reloading, and ask anything, we all start out at the bottom of the learning curve.