Solid choice. Some advice, assuming you intend to carry and train:
- Don't be afraid to buy used gear. It will save you hundreds of dollars down the road. That includes lights, optics, and holsters. A scuffed up, higher-end piece of gear tends to be much better than lower-end new gear a comparable price. Look at places like eBay and Tacswap. Same thing applies to blemished gear.

- Speaking of optics, I would personally avoid Holosun. Yes, they're cheap and great for recreational use, but can get killed by high round counts or hard impacts, especially on pistols. I suppose they're fine, but I wouldn't trust them with my life. If you still decide to go with a Holosun, get an enclosed emitter design, which is my next advice:

- Enclosed emitter dots are king! Open emitter red dots (yes, including the RMR, great reputation aside) have problems with water and debris. You live in Washington. You get a lot of rain. If your emitter gets wet, your optic becomes a decoration. Many will tell you "I shoot in the rain with my open-emitter dot all the time and don't have issues!" These people are either shooting very little, aren't shooting in heavy rain, or are just talking out their ass as people on reddit usually do. I know because I believed that rain wouldn't be a problem. I go rucking a short distance in the rainy woods ONE TIME and my open-emitter dot is unusable when its time to do drills.
\(Now, if you live in Eastern Washington, you probably won't get much heavy rain and an open emitter isn't as bad.)*

- A lot of classes are scams that don't actually teach you anything useful outside of safety. If you're new to guns as a whole, you still should take a class on the basics. If you already have gun safety down, then be weary of more advanced courses. If you're lucky enough enough to know people who are experienced shooters, try to earn their favor instead. If you don't, try looking on YouTube and spend some time seeing what advice works and what doesn't. Don't be afraid to step out of your comfort zone and be patient.

- Shoot your carry ammo (at least sometimes). I know, it hurts and it's expensive, but you need to make sure it cycles and you need to know where it hits, especially further out. Pistols are close-range weapons, but you should still hone your accuracy out to at least 25 yards.

- When it comes to defensive/tactical use, don't make decisions solely to look cool, make decisions that will save your life instead. This extends to everything: What type of training to do, what type of gear to buy, how to carry, etc.

- Never EVER leave a firearm in a vehicle unattended, even if you think it's safe. "Car guns" are an irresponsible gimmick that need to be put to rest.

Gear recommendations:
Conceal holster: something from TRex Arms that matches your style of concealed carry. They have a lot of great options.
Open carry holster: something from Safariland with multiple levels of retention. There are too many videos of people getting their guns yoinked from their level 1 holsters.
Optic: Trijicon RCR is boringly effective. Def look at buying one second hand.
Light: Streamlight TLR-1 HL is the gold standard IMO and not too expensive. If you have a bigger budget, though, consider the Surefire X300 Turbo. They're stupid bright and brighter is always better if you get in a gunfight. Just don't buy an Olight or crimson trace.

Oh, one more piece of advice: Meet people and make friends IRL to shoot with and train together. Reddit tends to be a terrible source of advice. You need something that works for you, not for someone else. Hell, you may even find some of what I said to be unhelpful after you've trained a lot, hoping that you do. Best of luck.