Uncle has a similar size Krause and from what I hear he has all he wants to pull it with his 8970 NH.  I have a 32ft. 6431 and my 325 hp FW-30 handles it but it is not over powered.  Couple neighbors have 23 ft Glencoes one runs a JD 8760 with packer behind and he doesn't feel overpowered the other just bought a JD 9200 to handle his better.