SEO strategy for an ephemeral landing page

Hello,

I want to sell 1 product during 2 days only.
Discount on the product with a small supply.

Doesn't matter if the Google algorithm decrease the website ranking days after the event.

What is important is to be seen 1 day before, during and after the event.

The landing page will have only 1 button “Buy Now” and open an Amazon page.

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Main strategy = focus on the domain ranking and 2 master keywords.

The URL will look like a sentence.

Strategy 1
> One extra-long domain name with all the 100 keywords inside + 2 master keywords.
e.g. this-is-KW1-KW2-KW3-KW4-and-Mkw1-Mkw2.com

Strategy 2
> A domain name composed of two master keywords.
e.g. Mkw1-Mkw2.com
> 100 subdomains with complementary keywords.
e.g. this-is-KW1.Mkw1-Mkw2.com
...
this-is-KW26.Mkw1-Mkw2.com
...
this-is-KW84.Mkw1-Mkw2.com

Strategy 3
> 100 extra-long domain name mixing my keywords and master keywords.
e.g. this-is-KW1-Mkw1-Mkw2.com
...
this-is-KW26-Mkw1-Mkw2.com
...
this-is-KW84-Mkw1-Mkw2.com

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Strategy____? : I'm open

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GOAL
Google rank 1rst = keyword X + master keywords 1 & 2

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I plan to use 1 or 100 simple HTML landing pag(e) based on your advices. No CMS.
I don't really know if Google Ad is mandatory.
Please, if you advices me to create 100 HTML landing pages, keep in mind that only 1 keywords will be changed inside each pages.

For my case, I don't know if it's better to use domain, subdomains, subdirectories...

I would like to pay a SEO expert available tomorrow to give me advices while telling me what is the BEST strategy and to review the SEO my HTML page(s).