Unresolved conflict is a killer. That's why real leaders deal with conflict head-on. They take individual feelings seriously, but then they get beyond those feelings. 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.