It is clearly a two-edged sword.
Getting new revolving as early as possible then establishes an open date that begins building of the age of the account, which helps scoring.
However, a lower score may lead to denials, and thus add inquiries without any new account.
It also may result, even if approved, of less desirable rates, credit limits, or other terms.
All things considered, I would opt to wait for improved scores, increasing the chances of approval and of obtaining more favorable terms.
However, its a personal decision......
