Settings for AVCHD 2.0 Progressive compliant file, playback

[Selur]

For Blu-ray compatibility it's not okay, you would need to use buffersize <= maxrate, due to the restrictions I quoted, so you would need to stick with 25000 for both, but that is for Blu-ray compatibility which isn't really what you are aiming for. (your should change the title of this thread btw.)
So my guess is that if TMPGEnc's AVCHD 2.0 validation doesn't complain you should be fine.

Cu Selur