I can understand having 300-400lbs of lead, but I am not quite sure I would want to run around the lake with 1,100lbs of lead in my boat all of the time. Why didn't you try adding a custom Fly High sac. This one is a little pricey, but could not have been much more than 1,100lbs of lead.
http://www.bakesonline.com/detail.aspx?ID=1813
Either way, hope the wave turns out great!