if i'm not misunderstanding you are aiming to build a collection of NFTs and hope that elon musk and some other influential people buy those NFTs from you, then I think your plan is going to be difficult to happen smoothly.

there are thousands of NFT creators and hundreds of thousands of NFT works have become trash at this time, so before you really jump into the NFT market, you must have a clear target market - a strong community - become someone who is influential too - promotion fund.

if you can fulfill the four above, I'm sure your NFT collection will sell well.