Hello,
OK, I'll do this, I'll speed up your website. Maybe we will have to change the background video a little (for example load it from vimeo or youtube).
The regular price for WP speed optimisation is about 100USD here, on freelancer.com, but I don't have too many optimisation-related feedbacks, so I'll do this for a half of regular price.
Of course, you don't have to pay me anything in advance or if you will not be happy with the results.
Looking forward to hearing from you (send me a message even when I'm offline),
Adam