Re: my career is not compatible with marriage
To be candid as your friend, I think you're in danger of trying to reach too far. You already acknowledge that your field has high relationship failure rates (so finding the right guy would be hard) and that you need to find a guy who would be willing to take a back role in providing for the family (such guys do without doubt exist, but are a small minority).
Couple that with requiring the guy to be muslim or willing to convert, and you're looking to try and catch a small minority of a small minority who are able to make a hard situation work.
As your friend, I believe that your opening statement is correct - you are in a situation where your career is very difficult to reconcile with a successful marriage. You're happy being independent and all now - but the longer you leave it the harder it will be to get married.
Take a deep hard look inside yourself and think if you truely believe that your career is worth enough to you to take on the risk of being single into your far future.