If you look at the Modern-Aire site, they have several shapes where the front tapers at the top to the depth of an upper cabinet, and the sides are straight so as to butt up to, and cover, the yellow cabinet sides you mentioned. Their typical sizes are 18" and 30" high, but you could get a 24" custom one if your budget allows. Or you could get an 18" and have a box made for above it to cover that area and to which you could attach replacement moulding. The box could be made of either wood matching your moulding or sheetrock. Vent-a-hood has a stainless direct replacement if you decide to stick with the same size you now have. I'm attaching the link to the Modern-Aire page that shows their shapes. PS-10, PS-11, and PS-26 all have the characteristics I was talking about above. Here is a link that might be useful: Modern-Aire Hoods

Thank you all for weighing in on this decision. I read each and every comment and you gave me a lot to think about! We ended up going to Bargain Outlet tonight to order different countertop. The Soapstone Sequoia tops that we bought ended up not being long enough (Big oops) and they won't work in the final layout that we settled on. When we changed from a range to a cooktop, we could no longer do the cut for the range, and it threw our measurements off. Somehow we missed that little detail until today until we set the counter on the cabinets and realized it was 6" short. : P (Must have been DIY dilirium.) But...we think it might have worked out for the best. We had bought the counters months ago when a local store was going out of business, and then more recently we got the cabinets. Seeing them together showed us that while they could work, they weren't a super match for each other. When we picked up the cabinets, they came with a few small sections of Bella Noche laminate, and they looked great together. Since we were going to have to order counter anyway, we switched directions and ordered Bella Noche instead. We never would have picked it from the little sample cards, but seeing the remnants with our cabinets helped us to know that we'd like it. While we were at Bargain Outlet, we ordered a 30" wide x 18" tall wall cabinet to place under the short wall cabinet in our layout. Our plan is to leave the doors off of it so that I can have a little bit of open shelving, but it will be boxed in along the side of the range hood like many of you suggested. Playing around with the shelf last night made me realize I could have a lot of fun with an open area there to decorate. We also ordered a glass door for the corner upper to help it feel airier over there om the sea of uppers, and it will give us another spot for displaying pretty serving bowls, too. Colors for the oven cabinet, hood and island remain to be determined. I don't really want to paint all of the uppers at this point. We have a busy family that the factory finish will probably handle better than a home paint job. Maybe someday, though! Now I have to see what colors look nice with both the cabinets and the new laminate. Should I keep it simple and do black? (Our fridge is black... and the cabinet doors have black lines along the details of the trim.) There are flecks of dark blue in this laminate too, although it's hard to see in the sample online. Bella Noche:

I just designed a kitchen with a certified Kitchen designer and learned that most stock cabinets are sized in 3" steps. So you can get them in 6", 9", 12" etc. So for instance you cannot go from a 9" cabinet to a 10" cabinet, the next size bigger would be 12". By the way there was no charge for the services of the kitchen designer from Lowe's that I used and she gave me a ton of good advise.

I’m trying. Unfortunately, i signed off on it. Lesson learned. We‘re adding cabinets next to the fridge to give it room to open and pushing the others down. I’m not sure I prefer a small counter area for a coffee pot or the long cabinets more, but it should help with the fridge issue. They added the fascia and crown to the top of the ceiling as well. After I pointed things out, it seems like they’re wanting to fix as much as they can on the plan. Not wanting to budge on the Dishwasher issue so far because of the plumbing already being done though. Maybe I can change the island without altering the plumbing lines? Going to keep pushing.