Arduino YÚN - 160 I/O ports needed

Hi,
I have to connect at least around 160 digital I/O ports, and I'm considering this doing on my YÚN, if anyhow possible. I've done some research on the net and found some 'port expanders', but they are based on I2C, which allows 128 at max. + YÚN's 13 pins = 141.
I might need two I2C buses, that would be cool. Maybe if other analog pins could be used with(or without) the Wire class.

Sensory and motor output data has to be broadcasted, one float each, at least 60 times / sec.

Any advice on the topic would be appreciated.
Thanks in advance!

VS

Use an I2C mux, bounce between expanders

Thanks for your reply!

I think that's goning to work.