Abctax has a great point.

You probably need a partners meeting to find out where they want to end up tax wise for the year, and discuss implications of writing everything off this year.

I would strongly encourage you to provide some good information, and explain the choices and consequences AND MAKE THE PARTNERS MAKE THE DECISION.

You make the decision, and 5 years from now someone will claim it was the wrong decision.

And Document, Document, Document the decision and the process.