Is Darley an option if i have Smedts?

[loki]

Basically, need cash to upgrade, and cant decide if its too risky to go
Bugg -> Darley (as this would leave me with Darley/Smedts benched)

i also have Dyson Heppell so if i do downgrade, Darley will be stepping up and playing for me this week
Thoughts? Worth it or will there be some other options later in the season?