Potty Training and General Obedience

So, have a few issues with our dogs and would love some input on what to do.

Dogs:

Preston (The definition of a Mutt)- He is probably about 4 years old. Got him from the local shelter. Currently he is semi potty trained, but destructive if left alone. We have a few toys and this helps, but he will chew on pretty much anything. He knows the command to sit, and I have almost got him on lay down and stay. All indoors, or on leash outside. Outside we can not let him off leash or he will run. Runs like a greyhound and can for awhile. Last time he got out he was gone for 2 days. Since the backyard has been escape-proofed and he can't run away any more.

Piper (Beagle and Bulldog Mix) - She is probably about 4 years as well. She was brought into the shelter while my wife worked there and wow has she come around. When we first got her she was scared, depressed and wouldn't even come near me in our backyard. We had to leave her in the backyard 90% of the time because at the time I worked from home and if she even heard my voice she would start shaking. Now shes happy, active, will lay with me in bed, and only slightly cautious around strangers. Her issues is potty training and destructive behavior. Much worse than Preston. She may only be 20" off the ground, but she can jump up on our counters like a cat. She also likes to escape the kennel they are currently in. To the point I had to buy clamps to lock around the bars, because she can unlock it and get out. Too smart for her own good. She does know how to sit, especially when the treats come out.

Holly (Vizsla Mix) - She is getting close to a year old. She was brought into the store my wife worked at and long story short, she was only 2-3 weeks old and would of died had she not taken her. We are looking for her forever home, and in the meantime she has gotten all of her shots, been spayed and socialized with dogs, cats and small animals. The issue we are having with her is potty training, destruction, and food aggressiveness. Bellow I will outline their diet, and current schedule. But, when its food time she will launch into her bowl hard. Like shes going after something she has to hunt. Always has. When she is done. she will immediately try to get to the other dogs food, so we now feed her in the kennel.

What I am seeking help in:

Potty Training - I saw there is a sticky for this topic, so I am going to read it. But, if there is anything specific I should be doing now, that would be helpful.

Destruction - How can I stop this behavior? Right now I use a spray bottle, or light pop on the nose. Not ever a hit, or beating, but a simple pop and a stern "No".

Food Aggression - I would understand this behavior if she was from a shelter or backyard breeder, but my wife literally bottle fed her from a puppy. How can I stop this behavior?

Daily Routine:

Right now they are kenneled the majority of the time they are inside. When I get up around 7 or so they are let outside to go to the bathroom, while I prep their breakfast. I'll post there diet below this. I let them stay outside for about 30 min, after I'm done prepping their food I go outside to play with them. Once back inside they eat, and drink then its back in the kennel. About every 2 hours I let them out to go play outside for about 20 min, use the bathroom, etc... Then back in the kennel. About 6pm I lewt them outside and make them dinner. They eat, drink and are typically out with the wife and I until about 8-9pm when they go outside for the final time and then its bed time. All 3 are crated together in an Extra Large kennel. We have separated them and given them there own individual space, but they whine all night. They all 3 do very well in the kennel. No fights, no nothing.

Diet - Currently they are on Abound, and if we where able to, they would get Fromm. Occasionally the shelter where my wife works gets holistic food they can not use, and she brings it home and we integrate it into there meals, but even then, its at a ration of less than 10%.

Morning - 1 cup dry food, 1/4 dry oatmeal (made with 1/2 water), 3 blueberries, scoop of peanut butter with multi vitamin in the scoop, and a squirt of salmon oil.

Dinner - 1 cup dry food with squirt of salmon oil.


Any recommendations are more than welcome!