The plan sounds good enough to me. I'd honestly recommend it more than trading really especially since I don't think you'd have enough time (or money) to learn trading itself, so yeah, just DCA. Honestly a lot better than when I was 19. First things first, I'd remove any sort of unrealistic expectations with trading. Even people who've traded for years may not necessarily have to not work after a few years. Just do and think what you can do for now.

Next is just the basics. Wallets, streamlined processes to buy, thinking about fees and stuff like that. Personally I'd say it's a good time ish to start since the market is expected to go 100k by next year. Maybe decide then and there whether you're going to sell out after that and then just start the DCA again when the price dumps down, or just continue. Former you can take some immediate profit, latter makes you stable but you probably wouldn't profit for the next couple of years.