Excellent, you are on the right track now Cedric!
The key is to start slow and have fun and learn :-)
I have a lot more modular gear now but probably will get a very small case for portable rig in future. I also recommend simple and often overlooked tools like knurlies- these things are cheap and wonderful for moving modules around without needed a screwdriver and such, splitter 1-5 mults hex devices that work like passive mults without taking up precious rack space HP and stackable cables like those from Tiptop audio. I am actually making a video tutorial on these things for beginners. Stay tuned!
Cheers,
sacguy