One way to make progress on a tough decision is to agree on what the question is. Agree on the wording and write it down. Debate often stems from having different ideas about what's being decided. Make the right decision, not the best decision. People can spend months debating the 'best' decision without actually arriving at any decision.
Every decision involves risk.
So pick 1 of the 8 and get going. Life's too short. You have 10 more decisions to make after this 1. Not everyone gets a chance to decide, but everyone should have a chance to be heard. Without at doubt, the most vigorous debates yield the best thinking.