Cool shop, you packed it in there without it feeling cramped. I misread what you said earlier about what you had and what you were receiving. I thought your video had a 2200mm/5200mm full stroke. I can see why the 3800mm is challenging.
If you don't mind me asking, what kind of woodworking do you do, and what lengths of wood do you typically work with? Do you work much with 8' lengths of wood?
I'm not sure about the L'Invincible, but the ST 5 ES has a 2250mm, a 2600mm, and a 3200mm option. The 2600mm slider providing a 7180mm stroke. It was my understanding I needed the 2600mm at least to slide 8' wood. Alas, there is no information there either about the actual capacity.
Your equipment in a different league than I
Is the K590 your referring to must be the Kappa 590? I only see a "590" in the Format 4 series.
As best as I can tell for SMC and Felder end up keeping their product lines fairly close by functionality but named very differently.
The Minimax Classic is comparable to a Hammer K3/K4?
The Minimax Elite is comparable to an lower end Felder K500's.
The Minimax ES is comparable to a Felder 700? (In features they line up pretty closely) or Minimax ES is effectively a SMC Nova in combo or a bottom end Nova for single function.
The SMC Nova is comparable to a Felder 900?
The SMC Class is comparable to the low end Format 4 Kappa?
The SMC SI X is comparable to the high end Format 4 Kappa?
Of course that just from looking at the documentation, I've never used any of these machines. Depending on who you talk to you get very different responses.