Scheduling strategy

Hi,

I am working on a Pharma project and there are a lot of WBS that are not really related so the project cannot really be linked as one project with one completion float.
Is it reasonable to monitor float on one activity at the end of each WBS, that way any movement in the project can be seen. I know this is not the usual practice but management want to see a schedule, now, now, now but without enough of the information being provided to produce the right structure.

Thanks for any comments