You have no idea how it must feel. Been very controlled over my job with a willy puller boss who manipulates you. and now, it truly feels free. with a job opportunity that could, if i set my mind to it, set me up for life.
All i can say is, if you are feeling like how i felt then 100% take the plunge!
I was last week supposed to be going away to newquay with my (now ex) girlfriend but we split up so i had the week off work, got browsing for jobs, the first one i applied for i got an interview and 2 days later got offered the job! Its fate