Your "Perfect Strength" Is...

Based on the answers you've provided, we've come to a conclusion...

That in your situation the Full Strength Oil (17MG/Serving) should work for you best.

This strength of oil is a perfect starter. The recommended serving size is 1 full dropper. The great thing about this strength is that you can increase the serving size to 2 droppers and it'll be the same as taking the Extra Strength Oil, due to the amount of CBD that you'll be consuming with the 2 droppers. And if you consume 3x the recommended serving size (aka: 3 droppers), that would be equivalent to the single serving size of Maximum Strength. 
That way you have flexibility and control with this strength to experiment with higher strengths before committing to purchasing them to see if they work best for you.