hi there
you need to decide where you want to be with your business before taking an investor n board, irrelevant of your size.
investors dont invest out of enjoyment, they are looking for a return and an exit strategy.
i have a friend in a totally different business sector, and they looked at a business angel then decided against it, they remain in charge, have all the shares and now 3 years later have a very nice business, yes it was hard work but they have succeeded.
good luck in what you do
regards
martin