can you enable port 80 for testing?
if not, or if that doesn't work, setting up a relay in EU if other people agree to it will be worth it, I can only assume that a good number of miners reside in the east side of the world, so a relay pool will solve both ISP restrictions and latency.
I can't enable port 80 on the pool since that's where the http server is. Connecting with http doesn't mean you'll be able to mine because there is probably a transparent proxy at his end which is proxying http traffic and would fail with stratum traffic.