Just MHO, but I think you could try dairy at one year, and not necessarily wait until 2. However, either way, I'd try not to do formula at all. That's just another whole can of worms and you don't know if Grayson will take the formula and/or react negatively. Additionally, the "hypo-allergenic"formulas (like Alimentum and Nutramigen) still have milk in them - it's just that the milk proteins are already broken down and therefore easier to digest and less likely to cause a reaction. The only truly dairy free formulas are Neocate and Elecare which are VERY expensive and don't taste good at all! If it were me, I would stick with strick no dairy diet until 1 year and continue to BF and then wean him - perhaps trying 2% milk instead of whole milk (often an easier transition). Soy milk is also a possiblility and you can also add flax oil to rice milk for fat content. Goats milk is a possibility too.
As for solids, my biggest advice would be to go slowly. Rice cereal or oatmeal might be OK but you should only use Beechnut (or an organic brand like Earth's Best) since Gerber has soy in it. Another great first food is banana - you can either mash one up with a fork or puree one with a little EBM - use a very ripe organic one. Easy to digest, etc. Pears are a good first food too. Since you have a family history of allergies I would give a new food in the morning only for two days. If no signs of reaction you can do twice a day if you like. I'd do each new food for 5-7 days before introducing a new one as some reactions can be delayed.
Hope that helps - let me know what you think. And good luck!