Could you survive on an Instructors salary of approx £10,000 for maybe a season or two?
Landing a job straight away as an F/O, probably on turboprops, you will need great luck or the help of someone on the inside.
F/O pay averages maybe £20-25,000 - could you survive on that for possibly 2-3 years until the bond is cleared or the Jet job offer materialises?
It can be done,but you are right to consider the hard realities behind the dream.