Specific SUT with unusual case scenario question from a LOMC N00b

I tried posting this over at Steve Hoffman forums and got crickets so I am trying my luck here as well as I am also new to this forum for posting although i have been reading off of it for years so nice to finally meet you all and I would like to thank you for your time as my question is kind of specific and a bit numbers nerdy beyond my physics calculation capabilities so I am hoping I can get some expert opinions here. To ask this question I have to give the details on my system setup and the vinyl wing of it is a new addition I am putting together but haven’t yet been able to assemble because the salamander designs AV furniture it will be sitting on in my living room is on backorder which is kind of an exercise in patience I hadn’t planned on… leading me to obsess over ideas and post on forums like this one in the meantime while I wait.

So my system has to do double duty as home theater and audiophile listening meaning some of my choices had to blend the two along with the WAF since it is in my living room but here’s the phono path in it’s entirety as it stands:

Hana Umami Red LOMC Cart (with wallytools custom brass mounting shim) —>
Bergmann Magne turntable / tonearm —>
Morrow Audio series 5 DIN to RCA phono interconnect cable —>
PrimaLuna EVO 100 tube phono preamp (with upgraded tubes) —>
Morrow Audio series 5 RCA interconnect —>
Marantz AV10 preamp/processor —>
XLR balanced output —>
Emotiva XPA HC-1 Monoblock SS Amps —>
DIY assembled 10 awg speaker wire —>
Martin Logan hybrid electostat speakers paired with a Deep Sea Sound Mariana 18” subwoofer

So the primaluna phono preamp has all tubes including the gain boost for the MC cart before it enters the signal pathway like a MM cart would through the rest of the tubes. It has 3 selectable gain settings for the MC mode but it’s right at the limit for my Hana Umami Red. I haven’t heard this combo yet due to the furniture backorder snafu but from what I have read online others that have paired that cart and phonostage seem overall satisfied. I upgraded all the tubes in the phonostage including the quietest I could get from Uncle Kevin at Upscale Audio for the MC gain tube complement.

So with all that in mind, here is my question:

If i want to retain the upgraded MC tubes in my signal pathway but minimize (if even possible) how much gain i need to apply with that to keep the noise to a minimum, is there any role for a small SUT boost between my turntable and the phonostage but into the MC (not the MM as would be more typical) signal pathway? My rationale is that a small boost from a SUT might allow me to continue to use these tubes in the pathway but minimize the gain i have to apply with them and possibly keep noise down while expanding the soundstage. I was thinking something like the Bob’s Devices Sky 10 SUT might be suitable for this if it is possible. But maybe I have no idea what I’m talking about here and that won’t work at all which is why I’m asking.

Any thoughts from those more experienced with SUTs and that know how to crunch the numbers applicable to my setup would be much appreciated. If exactly which tubes I got matters I could list them but i was thinking that’s probably unnecessary detail for this calculation but again maybe I know nothing (John Snow). Any thoughts on this or recommended SUTs that would work in that (apparently) uncommon usage scenario? I couldn’t find much info about if you can (carefully) feed a SUT into the MC pathway if you want to retain those tubes in the path in an all tube phonostage.

I know that was rather long-winded so again I appreciate anyone taking the time to read all of that.

Cheers & Thank you!