I'm pretty sure that fastpath is included with Cachecade. You might want to wait a bit as cachecade 2.0 is out for the 9260 and should be coming out soon for the 9265. CacheCade2.0 is way better than the version you are looking at now and in my opinion is worth the wait. Google for cachcade2.0 reviews to see if the improvements are worth it for you to wait.
lsi00292 is the new one, but this one does not support the lsi-9265 at this time.
The version that supports the lsi-9265 is suppose to be released in this first quarter of 2012.
I am not having luck finding the link that supports this, but if you look at the compatibility of the current cachecade you will see that it does not include the 9265.