Choose IEO and you will get an instant pump and dump or just instant dump. Choose ICO and you will get a series of pump and dumps (or just permanent dump 
). Choose to develop the product firstly. I can bet you don't need a token.
To implement IEO we need a large sum of money or cooperation of exchange to issue it. I believe that for a potential project we should choose an IEO, but before that, do the Pre-ICO. After obtaining the soft hat and then contacting the exchange to gain support for an IEO. Hope your project can achieve hard-cap through IEO or ICO.). Choose to develop the product firstly. I can bet you don't need a token.