No, Gordon has proved himself this year, moose has proved nothign yet. So, I wouldn't replace him. If you want to take a chance on him then I'd drop Tomlin for him. Although your team looks pretty good, I think you can afford to drop Tomlin with your pitching staff. Then hope Moose tears it up and trade him or Gordon quick.
20tm dynasty 5x5 w/BB,HLD
5 SP,3 RP