Welcome to the forum!!! You will like it here. There are all sorts of folks here who between them have a great deal of knowledge.
For $200.00 you definitely got a deal. It's really hard to tell from the photos, but it looks to be in good, shoot able condition. By the way, that's what I prefer, no regrets decreasing the value of a pristine, NIB safe queen.
I think you did really well. This is an item of considerable argument here on the forum, but that vintage, I would shoot standard velocity ammunition. Many argue that today's +P is the same as the old regular velocity, and others argue that that is not the case. I tend to err on the side of caution, and fire standard velocity ammunition in these older 38s.
There are some pretty nice cartridges out there in Standard pressure ammo, one that comes to mind is the Speer Gold Dot standard velocity 38 Special.
I reload as well, and have a great load for my older 38s. I have quite a few of the DS, Cobra, Agent, Diamondback configuration and like them a lot.
Best Reggards, Les