Rogue Cronus Magnum II, but I have depth constraints..

Hi all -- I am getting ready to pull the trigger on a Rogue Cronus Magnum II to pair with my KEF LS50 speakers.  I've listened to a number of SS and Tube integrated amps (Hegel H90, McIntosh MA5200, McIntosh MA525, Fezz Titania, Rotel A14 to name a few) and the CM2 was the above and beyond stand-out for my ears.  I had set a $3500-ish max budget for the amp, and the price tag on the CM2 is an added bonus.

Here's the problem.  The Rogue's depth might be an issue.  I have a very well ventilated AV stand, however it has vented enclosures on front and back with an absolute max depth of 18.5 inches.  I believe the Rogue's depth with knobs and inputs is 17.5 inches (I've also seen the depth measured at 17").  Is there any way an inch of wiggle room is acceptable for long term operation?  I'm sure I can make it fit, but it will be snug.

If this won't work, one integrated amp I haven't listened to is the PrimaLuna DiaLogue.  It has a more reasonable footprint for my space.  Any opinions on how it compares sonically to the CM2 before I seek out a listen?  The main thing I've learned in this search is that I want tubes.  It's what's right for me.

I'm currently driving the LS50s with a NAD D3020 via the internal DAC (RPI3+Allo DigiOne+Volumio via Coax) and a Pro-Ject Phono Box S attached to an AT LP3 with Ortofon 2M Red.  I mix up vinyl and digital pretty evenly, with an emphasis on jazz, soul, and indie rock.  I'm satisfied with this setup, but I want to get some more power going before I upgrade the TT.  As you may be able to tell, I'm just starting to get a bit more serious about this again after many years away from audio.

Thanks all -- I've lurked this forum for a while and am constantly impressed by the quality of the advice here.