I think you have something that is very very rare and collectable if it is in good or better condition. If the kit included the original unused tubes which I assume is why you put Telefunken in the title, then it's even more collectable. I would think you could sell it for a very good price that would give you the money you can use to buy what you want.
The guy with the most knowledge is probably Jim McShane who you can find on Audio Asylum, or under his web site name of McShane Design.
The guy with the most knowledge is probably Jim McShane who you can find on Audio Asylum, or under his web site name of McShane Design.