Never break a page unless explicitly told so, expand the margins to fit the content, and have mixed margins in the same document

Question

The first part of this question is basically this question: Absolutely, definitely, preventing page break

Partially modified MWE from that answer,

\documentclass{article}
\usepackage{lipsum}
\newenvironment{absolutelynopagebreak}
  {\par\nobreak\vfil\penalty0\vfilneg
   \vtop\bgroup}
  {\par\xdef\tpd{\the\prevdepth}\egroup
   \prevdepth=\tpd}
\begin{document}
    \lipsum[1]

    \begin{absolutelynopagebreak}
        \raggedbottom
        \lipsum[1-3]\lipsum*[4]\lipsum[1-3]\lipsum*[4]\lipsum[1-3]\lipsum*[4]
    \end{absolutelynopagebreak}

    HERE WE RESTART \lipsum[2]
\end{document}

Except, this only accomplishes the never break a page part. It never breaks a page indeed, but you still have to calculate the margins manually.

I can extend this page with the margins package, manually. But I have to do it myself. Since latex knows when to break a page, it has to know the needed size for items. I am wondering if there is a way to automate this?

Basically, the case below is what I want to accomplish,

• Have one page with 10 lorem ipsums, this page should take as much space as 10 pages.
• Have the next page with 20 lorem ipsums, this page should take double the space.

This would require mixed margins within the same document as well.

Is this possible, even if only partially so?

I don't mind having to use a different rendering engine if there is a specific feature for this in either xetex or luatex.

Thanks in advance.