Just take it easy for a few miles until it gets up to temp, and you'll be fine. On track days, we go easy for one lap to get the tires warmed up, and then we go all out.
Turn right out of the driveway and make two complete round trips on your nearest twisty (chip seal) road...mine happens to be 6.4 miles each trip! Tires are nice and scrubbed in at the end.
Seriously though, ride the bike easy the first few miles and don't do anything stupid.
I picked up my new set of Angels on a chilly night in a thunder storm. I rode across the street to IKEA's parking garage and did figure eights and laps for 10 mins. Then it was 35 miles in a down pour with the last 10 on back roads with no issues.
Anything you do other than ride it would take more time and be more squidly than simply riding the 100 miles. As quickly as moto tires wear out, that extra 100 miles is money in the bank. Is constraint during riding that hard to maintain for 2 hours?