Sorry it's taken me so long to update this thread, but I thought it would be easier to give a step by step of the process. I'm starting a new batch today.
I will say, if you plan on doing this, be really careful so nobody gets sick. Prepare at your own risk

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I purchased the pork belly at Costco. It was cut in 1 lb pieces this time and I got 10 lbs. Costco cuts the skin off. If you get it somewhere else, take the skin off.
I use tender quick as my cure and salt part. For every LB of belly use a TABLESPOON of tender quick. This CANNOT BE ADJUSTED. Measure and weigh your ingredients.
1 Lb of Pork Belly
1 Tablespoon of Tender Quick
1 Tablespoon of Brown Sugar
1 Teaspoon of Cracked Black Pepper
1 Teaspoon of Garlic Powder
I rubbed each lb of pork belly with the exact rub mixture above. Make sure to cover every part of the belly equally. Put in vacuum seal bag. If any rub mixture falls off the belly put it in the sealed bag. I put 5 lbs in a sealed bag with this mixture. It is the same mixture as my first batch and it turned out great.
Now for the other 5, 1 lb pieces I wanted to add a couple of other spices. Remember, tender quick always stays the same. Using the same base rub mixture above I added 1 teaspoon of toasted onion powder to 4 of the lbs and cajun powder to the last lb just for fun.
Everything vacuum sealed and put into the fridge for at least 6-7 days. I go 9-12 days just to be safe. Flip and massage the bags everyday in the fridge.
Sorry so long. I want to make sure everything turns out great and safe for anyone who does this. Feel free to ask any questions. I will update when I move to the next step in a week or so.