I understand money may be tight Kerry ... but here's what I would do.
1. Buy another better, cheaper more reliable F now, when prices are rock bottom. ( I'd even consider credit/loan etc if i could afford the payment terms.) with a wiser head and more knowledge.
2. SORN your current 'shed' and spend the winter tarting it up bit by bit on the cheap using your new friends and knowledge to help you.
.
3. Wait til spring ( April / May ) and sell your old improved shed for a much better price, recouping your loan and interest payments. Break even!
4. Spend any new pennies on your remaining better F and enjoy.
.... that's what I'd do, because all convertibles are cheap to buy in winter, and sell for more in summer. .... and moreso the F because prices have bottomed out....... They'll only go upwards next year.
food for thought.