If you use H3 immediately after H1, given the structure of the HTML 5 Outliner, will this be a violation or not?

Question

HTML

Good day to all.
Interested in the answer of connoisseurs on several issues that relate to SEO and the correct organization of the page code.
1. Will it be a big violation if I have the first 2 sections as undefined with the HTML5 outliner structure?
1. Untitled BODY
2. Untitled NAV
I use wordpress and there this question could not be solved with a superficial analysis. I didn’t bother with it, but I want to know what the consequences are and how much this is considered a mistake.
2. Can the page structure follow a not entirely logical construction, namely, immediately after the h1 tag, put the h2 tag
. Let me explain why this is done. The fact is that I decided to build the page structure in such a way that it was:
h1 - in one copy in the site header h2
- about 2 pieces per page
h3 - about 5 pieces
h4 - about 10 pieces
work or cost or reviews. Those. for good, you need to put h2 immediately after h1, regardless of whether they carry weight for search engines or not, but you want to get the maximum organic content for issuance.
Advise how to be.