"I'm concerned about the temp the caulk can take during setup time?"
If that's not printed on the rube, 3M's toll-free number should be. Those folks are absolute aces, call any of their toll-free numbers wit any question about any product they make--and they'll connect you to someone who can answer it, often an engineer.
We were trying to track down their "silver" masking tape, which is designed to peel clean after extended exposure to sunlight (up to 30 days, as opposed to a week for blue/green premium tapes) and got bounced through 3M divisions all the way to AUSTRALIA which is where the division that makes it apparently happens to be. Found the local supplier, confirmed the huge difference in working time, bought the tape. Two days of masking, working the week, rain the next weekend...yes, it WAS on for more than a week, and came off clean.