Thank you so much, Mike.
After reading through lots of advice on the web, I have decided to follow the accepted way of logging in (via the /Umbraco path). I just have to instruct my users to log in the Umbraco way.
I’ve also re-designed my Umbraco so that most users do not have to log in as they don’t need to write blogs. They just need to read blogs.
Thank you!