Hi Metal_Serra,
Take it easy here is my advice. Don't force yourself into something by getting a wrong start or something. Why not taking a bit more time into checking a few more modules that you might like. Indeed read into those semi-modulars a bit more as well. It's not a must but it's at least a cheap start to confirm you really going to like this and while you need more time to check, you can save more money.
If you can't start with 12 modules (that's just an example, it's not a must), perhaps you can start with 6 or 8 or whatever by that time you can effort. But as mentioned, this isn't going to be cheap, as long as you keep that in mind, you should be fine.
Take it easy, read and check a lot and then make up your mind :-) I know, it's easier said than done, but we all have gone through that "starting, learning & exploring" phase; a phase by the way that never really stops, there is always something more to explore and find in the modular world.
Naturally don't hesitate to drop here and there a question in the forum if you need more information on certain subjects.
Good luck and kind regards, Garfield.
Edit: removed typo.
For review reports of Eurorack modules, please refer to https://garfieldmodular.net/ for PDF formatted downloads