I advise that you apply for fiancee visa interview in September and do not travel to Britain until you receive the visa. If it takes 4 months you should change your wedding date once you arrive in Britain. If you get it quickly then all your plans may fit together. Regarding work. Best you do not commit to working in another country until you are married and receive your spouse visa after getting married as your application will probably be rejected as they may assume a marriage of convenience
