Tony
If this is to be unsecured may I suggest you do the job properly. Treat your self as a business and set out what the expenditure will be and when/how the funds will be drawn down as you may be able to arrange to draw the funds in blocks, only incurring interest from the date drawn. Then you need to predict when returns on the investment will start to come in and what percentage will be assigned to reducing the debt. You will need to factor in possible increases in interest rates and inflation.
Inflation will work in your favour here as the debt will go up with interest but wages can also be predicted to be higher. Predict periods of unemployment as you need to be realistic but also allow for periods working in non related industries as you will be able to allocate some of those funds to the debt reduction. Be realistic leave yourself a living wage but look to minimise the payback time.
It would be worth consulting an accountant if you can afford it as he/she will know how to really present the case. This would put a professional gloss on your application and that in it’s self will swing them in your favour. Also list anything you have done to position yourself in the market place even if it is only joining a local flying club, this shows you have researched your market and are not just trying to live a dream.
Hope this helps and good luck.
