Back in 83 we'd been offering silly contracts for ten years. I don't think we'd make that mistake now. The sums you're talking about are transfer fees, which are on the low side compared to other Prem clubs. Wages are the most important aspect.
Tony doesn't make very very bad investments. Even if the worse came to the worse, and we got relegated, we still have a great stadium, training ground, and football team.
Many teams have got relegated and then promoted again, like West Brom. Hopefully it won't come to that.