Thanks for all the information, I will sit tight and shop around for a deal on a used arch and modify it if I have to. I have since selected the services of a professional welder who is willing and does on the site aluminum and stainless welding for 80 an hour. To me this is worth it. I will prep everything myself so the welding time is kept to minimum.
Found a use one on craigs for 450 its 84" wide needs to be cut and welded to fit the V, however I still 2 cheap :)
http://orlando.craigslist.org/boa/1652660871.html