It sounds like your off to a good start and good job on going for suspenders and favor of dressing up. It sounds like a second suit should be your next acquisition. Start with the foundational pieces and build out from there. That said, definitely go for a solid navy or gray, you will get the most use out of one of those. They will prove to be more practical and wearable than your current pinstripe. If you have the opportunity to go custom, do it. Unfortunately, I do not have much knowledge on the european MTM and bespoke suit scene (but there are plenty of online operations like Black Lapel, Matthew Aperry, Dragon Inside and A Suit That Fits). I would also recommend picking up a few custom shirts if you can, Cottonwork is where I get most of my shirts from. TM Lewin sells some good shirts for the price but I, as you know, am a big fan of going custom. You didn’t mention shoes so I dont know where you are with those but some nice dress shoes are crucial to a good look. I think burgundy is the most versatile shoe color, although many people don’t agree with me.