Rearrange the parts of the sentence in correct order.
Out-of-the-box statecraft
P-economic growth
Q-would bring dividends
R-in peace of mind, savings and

The sentence begins with the subject "Out-of-the-box statecraft". This should be followed by a verb.
Part Q begins with the modal verb phrase "would bring dividends", making it the logical continuation.

"Dividends" is followed by the prepositional phrase in part R ("in peace of mind, savings and").

Part P ("economic growth") correctly completes the parallel structure initiated in part R ("savings and economic growth").

Thus, the correct order is QRP.