Shawn,
So there you have it. Length at 35' seems to be right for a reed valve BW.
Steel .008 cable will fly a bit better, but are harder to maintain.
Spiderwire is a close second.
Dacron works, and has been used for many years...just not a first choice by many.
Sounds like you are fairly new at flying. If so, consider the Spiderwire because of the less maintenance and handling. You need to be able to concentrate on your flying right now. Once you handle the plane without needing to concentrate so hard, switch to steel.
Of course, if you are already a proficient flier, then you need to assess your flying site. You should have a well maintained surface, free of twigs and stumps if you use steel. Steel will kink and fray easily, and must be handled with great care.
Good luck, whichever way you go.
George