So it would really be best to get what I'm after straight off if the parts can be hard to find. What I really want is the round steel roof but a close second is the black one you have - that's pretty nice too.
I was talking to an estate manager friend of mine and it turns out another local estate is looking for a woodland contractor to work a couple of months a year on his ground. If I can talk about it and secure a contract I could justify getting one sooner. I'll have to do a bit of homework on the numbers but I think I can make it work. I hope I can.