never begin approaching investors till you have not completed your product.
never focus only on seeking investments.
budget your startup with following economics
X – DEVELOPMENT COST
X – MARKETING COST
2X investments needed
X is something which can be decided by only you..
so with this economics, you realize you do need always a cofounder.
so 2 technical folks can get into initiating something, but partnering with 2 marketing folks may give better leverage
always remember.. the X component has to be as lean as possible.