I wonder if a mass distribution/mailing of the letter from Freepers would be a low-cost alternative.
It would. If attempted, they should be encouraged to use all their Internet based abilities - Email address book, other blogs they are members of, other Email "lists" that they are on, other conservative outfits and lists that they receive notices from.
Maybe some conservative venues with a good size audience will even post it on their web page. Make sure to mention that anyone can reproduce it in any manner as long as you are given attribution as the source. That would allow it to be used on venues that people have to pay to get to. It would also allow commercial venues to publish it (without paying you) but then I figure wide distribution and not money is what you seek.