ATC83, here we go some of your questions answered, take home pay depends on if you pay into the company pension or not. You have to put in 8.3% of your salary to get a 12.5% contribution from the company. If you put in 10% your take home pay in year one would be about £2800 per month depending on how many flights you did. Even working your tits off you will struggle to to break 3k a month.
Time to command and long haul on the 330 is a moveable feast, five years ago guys were getting onto the long haul fleet within 18 months of joining and as previously stated time to command came down to three years. However with the recession no one has been taken on in the last three years or so and combined with the retirement age increasing to 65 it means there is just no movement in the company, the old boys are onto a good thing and no one can blame them for staying. As a result time to command has gone to about 10 years and Mixed fleet flying is anyones guess. This will all change though as when the market picks up there will always be a batch of FO's who will leave for the legacy airlines, the company will get extra aircraft and all of a sudden you're into a phase of expansion. So I'd say keep positive and keep applying. It's still a good place to work, mainly though due to the guys and gals that work there.