How long it will take to launch an ICO business? Any one can answer it.
before you starting your ICO, it is necessary to make certain substances. You must write Whitepaper, create a team, must have some initial funds to cover first expenses.
My suggestion to you, create a short project introduction and maybe post in the project development section, aks for an opinion from other members of the forum, there is a big chance to get help in your decision "run or not run ICO"
It seems that you have no idea how to make ICO if you're asking for such generic and not detailed questions. So, I suggest to don't even try it, there was more than enough shitty ICO's. I suppose that your main intention just to get easy money from investors without doing almost anything.
why do you think it's obligatory for new ICO to be "shitty"? OP did not say anything about his business model, they asked how to go out on the market using ICO.