No - play the best team. It's not just a question of picking the best 11 players. It has to be a cohesive team.Exactly don't make it difficult, play your best players
Given it is a must win match and if Lumley's passing is better then it makes sense to play him. Someone has to score some goals so anything that helps that is worth doing.
Personally, I think Wilder will start Coburn and one other. He's the only one who can finish. Keep Watmore for the 30 minute cameo.