# Properly align superimposed symbols used as custom bullet of an itemize environment

I'm writing a document with XeLaTeX where I often have to include stylised itemize environments as shown below (MWE follows):

\documentclass[12pt]{book}

\usepackage{relsize}

\usepackage[quiet]{fontspec}
\setmainfont[Mapping=tex-text, Color=textcolor]{Arno Pro}
\newfontfamily\symbolsfont[Ligatures=TeX,Numbers=OldStyle,Scale=MatchLowercase]{AHLCGSymbol}
\newfontfamily\ornamentfont[Ligatures=TeX,Numbers=OldStyle,Scale=MatchLowercase]{Bodoni Ornaments ITC}

\usepackage[table]{xcolor}
\definecolor{ahTeal}{RGB}{36,72,64}

\newcommand{\ahcolor}{ahTeal}

\renewcommand\labelitemi{{\relsize{+4}\color{\ahcolor}\ornamentfont{Æ}}}
\renewcommand\labelitemii{{\relsize{+2}\symbolsfont{b}}}
\renewcommand\labelitemiii{{\relsize{+2}\symbolsfont{b}}}
\renewcommand\labelitemiv{{\relsize{+2}\symbolsfont{b}}}

\setcounter{secnumdepth}{-1}

\begin{document}

\begin{itemize}
\item Step 1
\begin{itemize}
\item Option A
\item Option B
\begin{itemize}
\item Sub\--option C
\end{itemize}
\end{itemize}
\item Step 2
\end{itemize}

\end{document}


Every now and then, I need to show that some steps of these instructions are only required for an advanced setup. I was thinking to render such cases by superimposing the ornament on a round teal circle.

Using a special symbol for a item is quite easy:

...
\usepackage{wasysym}
...
...
...


However, the definition of \advanced is such that the two symbols are not properly aligned:

I've no idea how to fix this. What's the easiest way to properly render the symbol for the advanced steps? Shall I create a picture and use it instead? Thanks in advance!

The answer to the question "Alignment of custom item symbol in beamer" suggests a way to adjust symbols horizontally. Can it be done vertically as well?

In "itemize - alignment of custom bullet symbols" a few solutions with enumitem are reported, but can they be used when the symbols to align are two?

Inspired by the answers to the question "Vertically centering symbols and graphics inside math formulas", I've put together the following hacky solution:

\usepackage{amstext}

\newcommand*{\render}[1]{%
\text{$\vcenter{\hbox{#1}}$}%
}

\render{\relsize{+2}\color{\ahcolor}\CIRCLE}%
\hskip-0.95em%
\render{\relsize{+3}\color{white}\ornamentfont{Æ}}}

...
\begin{itemize}
...

I think it's not a very elegant solution (I'm talking to you, \hskip-0.95em) so if you have any better answer, please post it!