Stick with Warrior Forum, but promote it in a different way.
Locate some of the top Warrior Forum affiliates with large lists (think Gina R33dy, Dan Br0ck, etc.). Give them a copy of the method and invite them to do a JV with you, while agreeing to give them affiliate commission. Then prepare for a launch.
Grab a few domains and write reviews of your product. Hype up your product via your list (if you have one) or by offering a "sneak peak" via a PDF or short video in the War Room or as a free WSO. Put your product link in your signature on all IM forums. Tease your Twitter followers, your email list, and WF. Then launch.
Is there a way you can help reduce the initial investment for your customers, such as negotiating coupon codes with domain malls or hosting services? Would you be willing to offer one-on-one support or invite your customers to join a special community (forum) for members only? If so, wrap each of those special offers into a separate OTO to sell after the initial purchase, and you can increase your overall profits.
Also, if your method requires anything such as purchasing domains, hosting, or other products, choose a website for each of those services/products and sign up to be an Affiliate with them BEFORE you create the PDF guides to your product, and include your affiliate link (masked) in your product. Any of your customers who sign up to, say, HostGator, through that link will put extra cash in your pocket.
They promote the product to their lists, which already convert like crazy. You'll easily make a few sales there if they promote your product for you.
Good luck, and I'd definitely be interested in taking a look at your method if you're serious about releasing it. $1500 isn't something a lot of beginners would be interested in, but there are people out there who have the money to invest in a solid product.