Good luck and have fun, absolutely do it and have a blast. The SF's are great engines, one of the better O.S. has made. Just use good throttle management and have a blast. Don't come in on a downwind dive pass and pull up too hard. [)] Add a few more #64's, watch the prop clearance , balance her proper, and just have fun. No need for any long drawn out mods. I am always for taking what you have, and making it last even when you outgrow a plane, changing engines, etc, and fly her until she gives up, then buy a new plane for the next level of experience.
Peace Out. Reg