Are you in love with some color choice that #1 doesn't offer? The fact that a cabinet place has floor models that are not perfect would actually turn me off. That is their way of getting business-people being able to see in person the quality and look of the cabinets. Even if cab maker 1 is repairing/replacing to make their displays look perfect, at least it shows they CARE about their product's look and their image. I'd be more likely to go with #1 just based on this unless there was some look I HAD TO HAVE that only #2 offered. And, if this is the case, I'd find another place that also offered it to see an option 3 so I had an apples to apples comparison on exactly what I wanted. Maybe you can find another place with high quality that DOES offer the finish you want.

You are wise to ask questions becasue you have a serious systems issue priority. This is classic example of why everyone needs to get your appliance specs and HVAC and electricians involved before beginning to design, especially if you want the commercial sized gas ranges. (Which you did.) Not every home can or should have gas or oversized appliances. Choosing the commercial lines adds huge costs for ventilation safety. Most people have no idea that a fan is as important as any other appliance. Call a few MORE HVAC companies and get them out to look and get some quotes. I cannot imagine any one with a gas ticket is putting in a line without checking the whole home balance, including the fan over your gas range and the range you chose. You simply cannot have gas without direct venting. You may have to compromise your range and change your BTU's or even go to induction. You need to hire a local Kitchen and Bath designer who will work with the HVAC contractor to get what you need and hopefully what you want. There are far too many details that are not even listed by yourself to address on line. Realistically, any advice here should be to have another qualified tradesperson look at it on site and work from there. This is one area where Houzz advice is not beneficial compared with a qualified tradesperson on site. Once you have this resolved and can pick the best appliance for your needs and wants then... we design. Best wishes and good on you for sharing your dilemma.

Zee M - I think a lot of people carry Fabuwood, so you shouldn't have trouble coming across it - it seems to be very popular. I found the following combinations: lower cost but not good service (in my opinion, although I'm very particular) and higher cost with better service. So basically, didn't find anyone that was "just right" for me. I kind of gave up and decided to go a different direction - I'm now planning to use Conestoga cabinets (higher quality for similar price, but RTA so you have to either put them together yourself or hire someone to do it for you). If you're willing to go with a little higher cost for better service, Corey with "Core Renovations" (East Northport) was very helpful - even offered advice after knowing we weren't going with them. Seems to be a very genuine guy! I'm not going to mention the names of people I wasn't happy with online, but you can message me with people you are considering if you want to cross-check.

A barn/slide door for that opening isn't practical. Unless you need to be able to lock the door, you could use full length café/saloon doors with a window -- the kind that are often used in restaurants between kitchen and dining. They're NOT just for saloons or restaurants and they'd "hide" the view behind the door w/o being in the way. https://www.pinterest.com/pin/385972630544218352/ You could also consider less than full length café/saloon doors.