How to center-align and adjust font of the index reference in a TOC using memoir?

Question

I'm using the memoir class and have a TOC that is center aligned. I adjust the chapter formatting and shown in my MWE below, but the index seems to follow some of the formatting but not all of it? E.g., it's not showing a leader, which is correct, but it's left-justified and the wrong size?

\documentclass{memoir}
\let\ordinal\relax
\usepackage{makeidx}
\makeindex
\makeatletter
\renewcommand{\printtoctitle}[1]{\centering\HUGE\textit{Contents}}
\usepackage{fmtcount}
\renewcommand{\thechapter}{\Numberstring{chapter}}
\renewcommand{\cftchapterleader}{}
\renewcommand{\cftchapterfillnum}[1]{\hspace{10pt}\huge#1\cftparfillskip\par}
\renewcommand{\cftchapterfont}{}
\renewcommand\chapternumberline[1]{\hfil\Large\emph{#1}\hfil\strut\huge\par\nopagebreak\hfil}
\begin{document}
\tableofcontents*
\chapter{The First Chapter}
Here is some text.\index{text}
\chapter{The Second Chapter}
Here is some text.\index{text}
\backmatter
\printindex
\end{document}

Answer 1

Something similar to this:

\documentclass{memoir}
\let\ordinal\relax
\makeindex
\makeatletter
\renewcommand{\printtoctitle}[1]{\centering\HUGE\textit{Contents}}
\usepackage{fmtcount}
\renewcommand{\thechapter}{\Numberstring{chapter}}
\renewcommand*{\cftchapterfont}{\par\centering\huge}
\renewcommand{\chapternumberline}[1]{{\Large\itshape #1}\par}
\renewcommand{\cftchapterfillnum}[1]{~~#1\par}
% remove some grouping
\patchcmd\l@chapapp{%
  {\cftchapterfont {#1}}%
}{%
  \par\cftchapterfont #1%
}{\typeout{l@part patched}}{\typeout{l@part patch failed}}
\makeatother
\begin{document}
\tableofcontents*
\chapter{The First Chapter}
Here is some text.\index{text}
\backmatter
\printindex
\end{document}