Can I create a removal order for 500 units, and then unsubscribe from Professional Plan?

Getting ready to shut down my account (shady competitor went after me) and have 500 units that I’m going to try to sell off in bulk to cover the $0.50 shipping costs.

I saw it can take from 60-90 days for inventory to arrive.

Does that mean I’d have to keep the professional selling plan for 3 more months? Trying to save on that $40 x 3.

Was also thinking about just doing a liquidation order within Amazon, I’d have the same question for that.

Thank you in advance for any help or suggestions.