Wireless ehternet(cat5 subsitute) to router

My shack is upstairs and the router is downstairs. Running a cable would be problematic including breaching outside brick walls twice. I bought an Asus EA-N66 wireless ethernet/ access point. In the ethernet  mode it claims 450mbs/sec and I believe it. I plug my Flex 64000M into it and presto internet direct( not wifi). I can run my radio as if it were plugged directly into the router. I have not noticed any latency even remotely on my ipad  or even on my iphone via T-Mobile.