I would recommend a short eight, 8' or 8'6", or just a slower 8wt. You'll find that most slower 8wt rods will often feel lighter as well because there isn't as much graphite out there to swing around.

If you just would rather have a 7wt, try the ECHO 9' 7wt.

Yet another option is to cut part of the front taper off of your current 6wt line and/or use a shorter leader, or to get a Headstart or Bass Bug line. (Headstart is about $20 and is basically the same thing)