How to control \chapter text related to \tableofcontents

Question

How can I control \chapter text associated with \tableofcontents

1. How to change the font size of \chapter{text} in TOC page.
2. How to restrict TOC pages to ONE. (Two pages are coming as default).
3. At the beginning of the chapter, text is coming in very big size font. How can I control it.
4. Chapter text is coming immediately after page number. I want to introduce space between page number and chapter text. How can I do it.
5. How can I change the page number position.

Here is the code:

\documentclass[a4paper,10pt]{book}
\usepackage{longtable}
\begin{document}

\tableofcontents
\chapter{(Chapter One)}

Answer 1

As Joseph said, 5 questions packed into 1 question is a bit difficult to handle. Nevertheless, here are 5 points for you to continue:

1. tocloft allows to fine-tune TOC entries.

2. You could use a minipage environment for the TOC. If the TOC doesn't cover much more than one page, you could use \enlargethispage or its starred version \enlargethispage* which tries to squeeze, such as

   \addtocontents{toc}{\protect\enlargethispage{2\baselineskip}}

3. I guess you mean the chapter heading. You could use titlesec to adjust it.

4. Chapter text after page number? Perhaps do you mean after chapter number? Also here, titlesec would help.

5. You could use fancyhdr or scrpage2 (of KOMA-Script) to modify page header and footer, this way also adjusting the page number position. To change the margins, use geometry or typearea.

Perhaps the documentation of the mentioned packages already helps in working that out. If not, consider to post a separate question for any open problem. This site works best in the way: one concrete question - one or more answers to it.