You know what the best path is already. Don’t let others distract you or put you off. Be confident in your position. Carry on with your plans.
Often times we know the best solution to a given situation. We may not have 100% of the information but we need to make the decision. No one ever has 100% of all the relevant and related information. You need to have enough information, and a good feeling about things, to then press on to the conclusion.
I like Colin Powell’s 40-70 rule in this regard. With less than 40% of total information, your odds of making a good decision are lower. Obtaining more than 70% of the total information is time consuming and unlikely to change your decision.
Who knows what ‘total information’ really means? And how does one truly measure 40% or 70%? Don’t get caught up in these things. It is a rule of thumb. Get to where you feel pretty confident in the decision you are about to make. Know that the information you have is accurate and from a good source. Then get on with the decision and move to execution.
Usually you can adjust later if the decision did not bring about the outcome you were looking for.
If you have experts with field experience providing your information, you should be fine.
Be confident in your position.