Ok, maybe wireless mini-pci inside an ALIX isn't such a good idea?
It seems all cards come without antenna, without specifying what type of antenna should be used.
Also, even if you're lucky finding what antenna to use, its impossible to tell what kind of performance (talking signal strength here) you'd get. Maybe I wont even be able to use the AP from the other room.
Who knows, no reviews for anything like this, of course since you can't even find info on what setups fit and not.
So, maybe its better to take the bulkier more expensive way, buy a external AP that you can read reviews on, and plug in to the OPT1. Surely not as fun, will need one more powercable, some more power, take more space, waste the extra LAN-port......