Very difficult (not impossible - see below*), from what you have written above. Why should anyone invest their money with you, when you have no track record. Also, what happens if you fall under the "proverbial" bus.

Any reasonable investor will say (not in so many words), use your own money to prove that your idea works, and then I may invest some of my money.

You may find some risk taker investors, who may take a bet on you, but if they are professional investors, they hedge their bet by making sure that they can wrestle control of the company from you if you don't deliver - and that's unlikely to be appealing to you either, so your best bet is to try to show the world that they were all wrong in not backing you - and they (investors) will all come crawling to you.

At the moment, the way I see it, you're not holding any of the cards (though I'm sure you see it differently), so investors will call all the shots in the current scenario you describe.