Isnt the 1400 series certified in Ireland? Wonder why its not certified in ETSI area as you state we can now use 4W from 5,725-5,850MHz so the 1400 could be useful here also.
Another alternative is the 1500 LWAP mesh series that i believe could be use since it support briging as well. Currently our business use the 1242AG to do 5GHZ briging, but this currently doesnt go higher than 5,725MHZ so we are stuck to 1W EIRP.
Hope Cisco could be so kind to enable functionality for 5,725 and above soon!