Assuming you are going to use it as-is with the throttle open, it will have a bit less power than the FP. The Max-S was known to be a pretty powerful baffle engine and the Flite Streak was designed to fly with a baffle .19 to .35. That said, give it a try on the 60' lines. If it can't hack it, then decrease the line length.

Make sure the engine is broken in with a few short "heat-cycle" runs if it is new. Since it is iron/steel, you might consider using some castor in the fuel also.

BTW, some guys are flying the ARF Flite Streak with a FP .15.

George