This would have been good to know a year or two ago. Have you been keeping it a secret or did I miss your post telling us of this great find?One of the most experienced spray foam applicators in the country is located in Albany, OR. If you make an appointment and go to his shop, he is very reasonable. I think that it cost around $300 to have my 170" 3500 done.
I have posted several times since I had mine foamed a coupl of years ago. Sorry you missed the posts.