I don`t think you can dream too much; expectations may be unrealistic, but dreams and desires shouldn`t be self-limiting. Ideas might be a dime a dozen, and profitable ideas one in a million, but without the idea nothing else is possible.
How you take that idea and move forward is secondary to the idea and so please don`t give up on your dreams even if at the moment you`re not sure how to further them. You will need to be the idea champion even when you do find a partner(s).
I can`t say this is the right place to find your partner, or your group either, but I do know that you are already furthering your ideas without a partner; sometimes the partner you seek is you and you just have to make the best of it for the time being. While you build you, and you seek partners on the web, you should also take advantage of your local groups and resources (SCORE, Meetup.com, etc.) to build supporters who might not be your ideal partner ($ alone isn`t what any of us needs).
If you just want to pitch your idea for money partners there are lots of competitions where you can present to investors and you can also go to a place like Staples
and Lucky Napkin
where they seek ideas and business plans (just two examples and might not be right for you, but given to show you can further your ideas by seeking people/companies seeking you!~)
, a simple taco maker:
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