Before or after depend essentialy on what's more important (more important has to appear first).
So sometime it may be usefull to find another words to express a thinking, if this help to permit to locate most important words at first begin of a phrase.
While people who like to see project be born would say:
- Un projet certe onéreux
Trying to place the bad work later as possible.
People who find the project to expensive would say
- Un coûteux projet
Changing onéreux for coûteux as Un onéreux projet sound not well.