The difficulty with what you are saying is that that is just not the waythat these capital projects are done. I know, because I have worked on them, done Cost Control on them.
The way they are done is: - the Engineers analyze it, including financial projections and costing out all of the equipment - a Go/ No go decision is made - the timing of the Go/ No Go decision is partially based on the timing of long-lead items. It can take up to a year or 2 to procure complex custom expensive items. - if you decide to Go, ordering Long Lead items is usually one of he first thing you do. That then becomes part of the Committed Cost for the project.
Any other way IS fiscally irresponsible. I don't buy a windshield for my car because it might get smashed by a stone... that would be irresponsible of me.
The automitive sector is different. Cars are not Custom one-off items designed by an engineering supplier, like the type that supplies JBI with their big equipment tiems.