I'm looking to tear down the wall between my kitchen and dining room, and I'm wondering if it's load bearing. If so, it's a 9' section that I want to remove. Would two 2x10s with 1/2" plywood between them be sufficient, or would I need to go with either 2x12s or LVLs? See the pictures below. And if you need, I can take a picture of the floor joists from the basement. This is the first floor of a two story colonial.