Where are you located. As canned fuel ie c12 or similar is going to be what you need to run. You will lose detonation protection running a low octane fuel and lack of lead will increase engine wear greatly.
Got an airport? I would bet they have some av gas. Which would be much better than 87. Not ideal but at least you would get some lead. Adjust your plug accordingly. Since the only way to add protection back would be to pull some timing. Surely you aren’t the only guy running 2 stroke down there. Maybe find someone else running 2 strokes and see why they run?