1. Is it better then feeding dry and wet?
Yes, it is what they have evolved to eat naturally. The wet food you are feed is very good, though.
2. Are there any cons with it?
Potential salmonella, you have to clean your kitchen after preparation... their breath is gross, sort of a metallic blood smell? It's why I won't feed the dog raw. She licks my face and is always up close to my face as well, the smell makes me want to puke when she's had raw food. Cats aren't as in your face (usually) so that smell may be a non-issue.
3. When feeding raw, I go to a special pet store for my cats and they have the raw food company called Primal, do you recommend that plus maybe putting in a chicken wing once a week to help with scrapping of teeth?
Sure. Make sure it isn't cooked.
4. Do you suggest more of staying away from pet raw diets and just buying raw food from supermarket?
You mean commercially made diets vs grocery store stuff? You must do a LOT of research and buy a lot of things in order to prepare your own raw food. It is not as simple as putting down a piece of raw chicken breast, they need correct proportions of muscle meat (~80%), organs (10%, 5% of that liver) and bone (5-10%) in their raw diet. It's a science I am not comfortable playing with, and they would require variety as well as different meats have different nutrients in them. You would also not want preground food from a store as it may have been sitting out longer and the more surface area is exposed, the more bacteria are growing.
I do also every other day cut the cats food by half and then put in some of the Primal freeze dry food mix in with their normal dry.
DO NOT MIX DRY WITH RAW.
Dry food takes longer to go through a cat's body, while raw food is designed by nature to exit very quickly... if you have kibble and raw at the same time, it makes the raw food sit way too long in their bodies and may let bacteria from the raw food make them sick.