bj77,
If you don't like doing 90hrs/month- DON'T go Ryanair!! You'll be doing every bit of that, and in 90min sectors!!
I would suggest that if you got DEC with Thomsonfly, the fact that you would spend the 8-15 yrs you'd be waiting for a command in BA as a Captain would make up for any possible difference in salary later on.
Thomsonfly/Britania is very well thought of as an employer, so I'd think that was the way to go.