Glenn, your question is basically how powerful is the brodak .061. I am not qualified to comment on that. But, my slightly oversized White Lightning flies very well for a flat winger with a norvel .061 on 45 foot 30lb. spiderwire lines.  The .008 braided lines were just too much of a hassle for me.

I would try the 52' lines with a great deal of caution.  I think 45' is about right, or even a bit long.  However, it is easier to cut lines down, than add to them....

If you fly conservatively, you should be able to safely cut them down a bit at a time until the plane flies solidly at the ends no matter what the maneuver.

On sheet wings, I put a bolt through the wing and just add or subtract washers as needed.

        Why waste a nickle when you can get a good washer for only 7 cents (plus tax).