We have a cockapoo, she is a year and a half old & weighs 15 lbs. We love our little puppy, she does not shed & both my husband & son (who both have dog allergies) are not allergic to her. However, she of course brings in pollen from the outside that can cause my husband to sneeze. Our dog is a great family dog, playful but also snuggly.
My recommendation is to find a local breeder & check them out, especially if there are allergies in your family. My husband can tell after about 5 minutes with a dog if he is allergic.
As for grooming, our cockapoo needs to be groomed about once every 6 weeks or she gets too matted, I don't know the prices in your area but here it's around $50 which can add up quickly.