Thanks everyone, I appreciate the comments very much.
I use the Stoik xstitch software demo, which seems to have served me quite well over several projects (and
free fits my budget quite well).
My current project will not be the same picture, but it will continue the Chrono theme. I can't remember where I got the photo from (strategy guide, art book, somewhere like that, though not directly from the game), but below is where I am now plus the original pic. As I've mentioned, it uses 160 colours, will be 230x173 stitches on 22 count.
I think the next project I will tackle after this will not be quite so massive, these 3+ month projects will be the death of me!
-cc