Even though Goofy's Kitchen breakfast is my favorite (because the serve yourself, all-you-can-eat buffet has a very wide variety of things to choose from for adults and kids and classic Disney characters running around), it is very costly (at its absolute cheapest point, which would be an off-peak season breakfast, the total with tax and tip included is about $32 per adult, and at its absolute most expensive point, which would be a peak season dinner, it is well above $40, but under $50, per adult), and it is hard to convince people that paying that much for any meal is worth it. (My friend, who was a Goofy's newcomer, looked at me like I was nuts for suggesting we pay over $30 for breakfast in December, but I was SO relieved that she loved it.)
However, I think that the Minnie & Friends meal may be a great way for you to start off in the world of character meals because of the abundance of characters and the cheaper price tag. The price for Minnie's, last time someone posted it, is something close to $25, I believe, give or take a dollar or two. In any case, it is well below the price of Goofy's and Ariel's Grotto. Goofy's and Ariel's are both considered by DLR to be "premium dining," while the other character meals are not, for some reason (perhaps because of the selection of food at Goofy's and the more unique specialty items at Ariel's??). So I think you get a lot of bang for your buck at Minnie's with the characters alone.