After few observations, the delegation to incrediblesnow is not ideal as imagine. flyingcondor's delegation has able to obtain 100% while this addition SP is wasted.
So the solution is, having back SP and posting out as chawl. And I believe this will maximize the profit.
And the duration of delegating to incrediblesnow is 31days.
1.62SP x 30 days = 48.6 SP
48.6 SP + 284.106 owed Steem = 332.706 Steem