Thank youI don't think there is something as "too much html", it comes down to file size and it can be for html, javascript, or whatever.
Just try to keep it compact enough so your site can be loaded in an acceptable amount of time.
I use wordpress already. I didn't know there were plugins for this stuffAs long as your load time on your site is ok I would not stress about it. You could always move your site to PHP or even use wordpress if you are trying to get ranking. Lots more plugin that you can use for wordpress.