This is the mistake all new chemists make. They promise product.. this adds a lot of stress and your buyers get pissed because it will take 3x as long as you think even if you have done the synthesis before, thats just how it goes until you have done the same synthesis 4 or 5 times at that scale. Just shutup and do work, when youre product is ready if you still feel like you can sell it at that price then put it up for sale.