For any ICO projects, direct contacts of large investors are more appropriate.

1. Pack your product. Make an investment presentation and financial model.

2. Choose a market that is interested in your product. For example, we have a special Asia investor database.

3. Contact them directly, meet, show your product.

This is the fastest way to attract large investments quickly.
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And maybe Bitcointalk: Ultimate ICO Starter will be useful for you. This is a free document for the creators of ICO.
You will find there an example of tokens calculator and a financial model.