Did you post any mixes from the studio sesh?
About the only thing that I would add would be a compressor in front, not the loop. I find that I like the sound of true singles through a compressor just a bit better than straight in.
That Carvin will get the job done. What are you going to be using for a cab? Or will you go direct into the board?
Seems like mt2 in the loop would work
Alternative preamp
Do the EQ knobs on a Carvin 100b work like on a Mesa Mark where they're before the distortion?

what amp ya using?
Boss Nextone Stage 40. It's a great sounding amp in a light package. Gets really loud too without losing character but we tend to keep things at sane levels. I like the ability to assign boosts or overdrives to the boost button and there's even a "solo" function (volume boost) on each channel.
I've heard good things about the Nextones...they sort of came out around the same time as the Katanas, and got overshadowed by them.
Yes they did. The Katana's focus on the preamp modeling and pedals and effects whereas the main focus of the Nextones is the power amp. There's some preamp stuff in there (has to be) and with the last firmware update they added pre and post preamp EQ (graphic or parametric), some overdrive and boost choices and the solo function. There's a lot that can be tweaked with the power amp profiling/modeling. Fixed bias is just that but with self-bias, there's more options to change giving it a different character, and all depending on which tube type is selected, and per channel. The clean channel can be 6L6 and the lead channel EL34, or whatever. They can both be the same. And can be saved in the editor as a preset and when you want to load in another one, connect it to the computer and open the editor to make the change. I'm really impressed with it. It doesn't take much to get a good sound out of it. The editing takes it to a whole new level though.
I think the hard sell with those is that the very people that understand about different tube types, bias, etc are not ones who would get a modeling amp. Personally, I think they sound great, but they aren't 'preset based' like the Katana (which I also like)- and easier sell for people that want to plug in and sound great just pressing a button.