Technically, yes, it'll work. Expense-wise, not so much. The minute you take the Moogs out of their powered skiffs and put them in a Eurorack case, you're paying to house and power those Moogs twice.
Instead of making an expensive mistake in the pursuit of portability, see here: https://www.moogmusic.com/products/mother-semi-modular-multi-tier-rack-stand Now, right there on that page, you can see the REAL solution: a four-tier rack ($100) and an empty Moog skiff ($89) which deals with housing the Eurorack additions. As for portability and casing, there's loads of potential solutions for that...such as getting the right foam to put this into a large ammo transport case that's essentially the same as most instrument cases these days...hell, SKB even makes their own line of firearms cases!
Now...TWO Disting EXs? No. The menu diving will drive pretty much anyone insane, and frankly, it negates the immediacy of working with a modular synthesizer. Plus, one is JUST FINE given what just one can do! And the Pitt Lifeforms System Interface has a lot of compromises to it that I feel limits its usability. A better choice (in the same space) would be Catoff's MIX4 set...which is only $50 more, gives you full controls on ALL channels (not just three only), has TWO AUX send/returns, balanced 1/4" outs, metering, headphone preamp...and if four channels isn't enough, just buy a few more of the XIN expansion channel modules.
However, I would stress that, in the space we're talking about here, you need to be looking at SMALLER modules for your primary Eurorack functions. True, the Arbhar IS NICE...but it's large, and this build can't support having these huge things. Given what the Arbhar IS, wouldn't it make more sense to use the pretty-much-the-same-thing Clouds in its various shrunk-down 3rd party builds? It would definitely be CHEAPER. And for that matter, if you can do without the AUX setup, you could jam a 4ms Listen Four 1/4 into half the space of either the Catoff OR Pitt.
Mind you, I do think this idea has merit...I've even messed with a four-tier 60 hp build on here with a DFAM and my Subby as two tiers and two open skiffs for Eurorack, and may well do this at some point in the next year-ish. But there's also pitfalls here, too...so be careful, otherwise this can and WILL get needlessly pricey.