Protecting floor joists resting on cement?

I'm finally doing my kitchen over, and need to bump out the rear outside wall about 9" and create a small bay about 7' wide (on an 16' wall) for windows above the sink. it will be the full height of the 8'-6" wall. it will fit neatly under the eave of the roof above which has an 11" soffit. see a rough drawing attached. My plan is to sister joists for the bay to the existing joists, and tie the studs above to the rafters. again, the bay will be 9" deep, 7' wide, and fit completely within and below the above soffit. kitchen cabinet/sink will fill the space, with most of the weight of the cabinet borne by the existing floor, so no real load on the new 9" out. hopefully this all makes sense. Does it seem sound to you? thanks as always you guys are great here. great perspective on every project. [ATTACH]95177[/ATTACH]

Hello, I will try to be brief. I am trying to open up the space in my kitchen and I want to be sure that I am not taking out a load bearing wall. The walls (drywall already knocked out) used to be a pantry, a recess for the refrigerator, and a closet. Home built in 1992. I have pictures of the joists in the attic and supports in the basement. The walls in the kitchen appear to be framed out (as if built and then set in place) but they seam to align with the joist. I want to be certain that they are not bearing load. Also, there is some odd frame work which dropped the attic down in one spot in the kitchen. I did my best to draw the floor plan in relation to joists and floor supports. (joists = green, floor support = red) What does everyone think? Are they load bearing? Help greatly appreciated