I was surprised to see no Roadster info too. I also noticed the Triaxis is not displayed on their site any more. I have both, and I'm glad to have them.
Pedals: Mesa Tone Burst, Grid Slammer, and Flux Drive. I use all 3 and stack them. A good compression pedal is a good thing to have. All pedals are subjective based on taste and amp, but in this case we have the same amp. I really like those pedals shaped to taste. The tone burst is basically...
I have a 2x12 vertical slant, but have never played it through a Lonestar. However, you can expect a heavier, tighter low end with more focus than your 3/4 open back. I have Mark IV combo with the 3/4 open back with the black shadow and switching between each cabinet is a significant difference...