That's quite a big kitchen! I'm not a contractor, but I buy REOs and foreclosures and rehab them, so I've done a bunch of kitchens. Demolition shouldn't cost more than a few hundred dollars. It's everything else that costs a lot of money.
Depending upon the footprint of the kitchen and the quality of the cabinets, the cabinets will cost anywhere from about $10-20,000. If you want high quality, dove-tailed, quiet-close drawers, think $15,000 or more. I get my cabinets wholesale so they cost me about 30-40% less than that. I'll be happy to help you with that if you'd like. Moving plumbing can run up to a couple thousand dollars (or more) depending upon the difficulty of doing so. With regard to the countertops, formica is obviously the cheapest, but for solid surface you'll get the most bang for your buck if you shop around for granite. If you don't go too exotic, you should be able to have it installed for less than $60/square foot and perhaps as low as $45/SF. Quartz will run you a bit more. If you're adding flooring, that will be another couple thousand installed.
In a nutshell, when I know I have to do a nice, higher-end kitchen, I budget at least $20,000. If I have to move plumbing, add lighting, flooring, or anything else, I bump it up to $25-30,000, depending upon the size. Some people spend 10s of thousands more, but it's not necessary to get a very nice kitchen. I hope this helps. As I said, let me know if you want a good deal on cabinets. I'm also a loan officer, so if you need a purchase or construction loan, let me know.