I am acquiring an e-commerce company, and the close date is anticipated for March 30th. I will be the only member/100% shareholder.

An investor wants to invest enough money to acquire a 15% equity position in Newco. The investor is not able to invest until approximately April 28th, a month after the close.

How should I set up the company and/or the 15% investment to pay the least in taxes?

I would like to have the LLC distribute the 15%/proceeds to me personally. But I’m not sure this is the best way to do it.
As of this moment, Newco will be an LLC.

Is there any advantage to creating a Holdco and having Newco reside underneath it as a subsidiary?
Does this help me with taxes at all? I’m open to any and all suggestions to pay the least amount of tax.
Thank you in advance for your support. Tom