I flew my kit built 4*60 with a Enya .90 and it was a great match. The kit version is a little tail heavy with a two-cycle engine, so the Enya 4C was just right. It swings a APC 14X8 about 8800-8900 with the carb restictor removed and muffler pressure.
The G-90 is no slouch either, but it does burn more fuel than the Enya, so plan accordingly.

enjoy