You can start requesting basic text titles at 500 posts. ALL title edits after that are every 500 posts.
You can start requesting colored text titles at 1000 posts. However if it has not been 500 posts since your last title request, you have to wait until you reach that post amount to request a new colored text title.
You can start requesting Image titles after your 1,337 post ban. The same rule as above applies to this. If you have not reached 500 posts from your last request you have to wait until you do to request an image title.
So to answer your question. No getting a title edit now at 817 posts would not impede you requesting an image title after your 1,337 post ban. (817+500=1317)