@Arturio no problem
First row is perfect in my opinion, I have doubt about all that instruo modules, they are very HP hungry. In marbles; you have already a kind of scales for your generative part, I like the harmonaig but I’m not sure it will will very useful for now (but still a very good scaler), and I think that the TROICA are too large for your rack size, If you want modularity, I would go for a 2 VCO like the make noise DPO, because you can have flexibility of doing complex oscilliation and have them separate to do more clean sounds if needed. The granular synth is a beast but will need a lot of practice
Think about to have a couple of drums sounding modules, it can fit in your rack, then you could have both tonal and percussions sounds in one system. I would trade the harmonaig and the troica for a drum synthesis module, and the make noise DPO for flexibility.
If you can, keep some free space for the future, your needs will progress with experience. And you will find that space is very very important. That’s why M.I are dope, it’s very well optimised for space, unlike Instruo (witch sounds good but man…)
For me, the black hole DSP is dope, I have one too, sold it a couple of years and buyed again last month, I love his sound, it can make a simple waveform sounding like horns of hells. But I agree that the FXAid is a good beast too and very HP saver !