How do you intend to fly it. The FS Jr. is sized to fly pretty fast with an older .15's or a modern .10. You may need to add weight to the tail for balance.

If you have a modern .15 and want to fly slower, you might be more satisfied with a profile Peacemaker. Also designed by George Aldrich but sized between the Flite Streak and Flite Streak Jr.

A strong modern .15 can also handle a full size FS if built light.

As mentioned above, Brodak makes kits as well as plans for both the FS and FS Jr., and there is an ARF available for the FS.

George