Your top sirloin is looking great...... so far. Sorry to hear of the phone drop. Guess we'll have to wait until you get a new phone and see the finish of a repeat cook.
It is my mother's maiden name and my grandmother's married name, the two best cooks I knew. However it is use as a first name by many folks so it was a win win .
There is some heat from the smoke I think you will be fine. The other day when I did the nuts it was harder than I was expecting to get the smoker going because the smoker was so cold and the fire in so small.