So I ended up highly modifying my plane. I rounded the sole and made a brass wedge. I tapped an 8-32 hole and put in a pan head screw. Works great!! I will probably make a few more in different sizes.
Here is an updated picture of my 3 planes.
My Blog on building my first Acoustic Guitar and Tenor Ukulele.. and whatever other instrument hits my fancy.... and as of mid 2011 also a Viola