You should know that you're "in the right ballpark" from the initial conversations that you've had with investors. Now it's time to see if you can pitch a strike.
Setup time to pitch two of your prospective investors. Evaluate the feedback and refine your pitch. If they're interested, but need more information, add it to your deck. If they were interested and want to move forward, it's time to pitch all of your investors - quickly.
This allows you to calibrate. Pitch a couple investors then either refine and pitch a couple more, or quickly spin up all your investor contacts and pitch them all in a very short period of time.