I know you already decided and got other feedback but wanted to share. I just flew through Denver on a Sunday morning (9ish). The regular security line snaked around for what looked forever. We were going through the pre check line and that was under 5 minutes. We went through Denver last year early in the morning and the lines were very long as well. Good choice with the smaller airport, I think the lines are always shorter.
I did the"fake" booking to get my offer and made sure I clicked on the business tab. The default seemed to be for the personal card. Just got my card today and it is the business card.