Job Satisfaction is every thing! you say right in the begining that you have always wanted to do 'the contract pilot thing', follow your heart. There is a lot more opportunity for a low time pilot in the UK, I mean guys(and gals) with 500hr TT land jobs on 757's etc. But contract experience will definately help with better positions down the road. Getting onto an aircraft like a 737 with low time has its pro's and con's, The number one con is your time to command will be increased drastically!!!!as you'll have no P1 experience, nobody wants to be a proffesional F/O. Besides the fact that alot of the worlds top airlines regard contract experience quiet highly.