Presenter hosting solutions

I'm developing an elearning site and would like to use interactive content authored in Presenter. My site is based on Wordpress so I could host the files on the web server. I'm concerned this would slow down the server if my site is successful and it attracts a large number of learners. I have just contacted Adobe sales for a quote to host the content on Connect and embed on my site - in the meantime, I'd be interested to hear your thoughts on the alternative options available.

My fall back is to host the content as straight forward video on Vimeo as there will be no problem controlling access or scaling this up. It would be far better to retain the interactive nature of Presenter. Cost and site speed are critical issues - your thoughts would be very welcome.