Keeper Decision - Mahomes or Chubb

Do I keep Mahomes in the 13th round or Chubb in the 6th round? 10 team league. Full PPR. Players I know are being kept are: CMC, James Connor, Kerryon Johnson, and Aaron Jones. I also have first pick in the draft (most likely will be Saquon). So, do I keep a possible RB1 in Chubb and then be able to focus on a receiver for my second pick or do I get a steal for Mahomes who basically got me to the playoffs by himself last season? haha

Im taking Mahomes at the draft value. I not as high on chubb as others though