Whiskey 50 tire recommendations

What 27.5 tires should I run for a long MTB race?

I am doing the full proof whiskey 50. It is a 50mi back country MTB race put on by epic rides. It takes place in Prescott AZ. I am riding a Santa Cruz tall boy with 27.5+ wheels. What tires should I ride? I like the plus sized tires as a relief against my less then stellar handling. But I am not married to them and would go narrower if it’s advised. I am looking to complete not compete. TIA