Have a look into Metrinch sockets.. http://www.metrinch.tv
You may be able to just buy the socket, get the impact version for if you get an impact at some stage.
They grab more of the bolt head than normal sockets so can be used on worn heads like spindle bolts can get.
I agree using a breaker and a cheater about 3' long and take it slow. Be sure your loosening, not tightening. You may need to choke the blade to stop it from turning.
I have a very good 1/2 impact and there are times where Ive needed the cheater etc. It happens!
Put some anti seize on the bolt.