[Flac] best params for safe archiving, 192kHz no-lax and w64 support

[Marek Peteraj]

Hi all,

i'd like to ask what the best options are for safe 24bit 96kHz
archiving. Currently i'm only using -8 but there are also some other
options like block size etc. Can anyone suggest? 

Also i'd like to ask whether a no-lax 192kHz mode is planned in flac,
seems like 192kHz isn't directly supported although flac can compress
such rate in lax mode.

My last question - is there any chance for flac to support w64 files?
That would be cool since it would allow to compress >2Gb files.
(not sure if flac can compress >2Gb raw files) 
See http://www.mega-nerd.com/libsndfile/ for reference.

Marek