Hello,
I have done similar jobs in the past, turning images into comic characters, and it is an absolute blast to do. If you would like I can send you examples of these jobs if you give me an email address.
I work quickly and accept no money up front and have no caps on revisions/edits. A job like this would be fun to do and I can have it finished in under a week. Poster size (11x17, 300 dpi) would ensure you can blow it up without losing resolution and have a great amount of detail done as well.
Hope to hear from you soon.
--Will Black