As billl said, moisture should be addressed with proper ventilation (fan). If you do not have one already, plan to put one in. I don't have personal experience with IKEA cabinets, though I have a disassembled one in my basement waiting to be installed as a utility sink. I read very positive things about the quality:cost ratio. Personally, I generally prefer drawers rather than cabinets. Anything you can do to get extra drawers would be good. Unless the subfloor under the tub is damaged or you damage the tub while removing the flooring, there should be no reason you need to remove the tub. And even if you remove the tub, you could probably still reinstall it. I replaced my tub (it was harvest gold) and there had been a small amount of water damage. I pulled up the underlayment and the subfloor was in good shape. With water damage, you really don't know what to expect until you finish demolition.

I also don't think you'd need to change the slate in the entry. Does it have a color you can work off of and love for the kitchen? If you don't think light painted cabinets will suit your taste or lifestyle, then don't use them, or use them sparingly and do the rest in a wood. There are so many colors and species of wood to choose from. ...Or one of my favorite kitchens is one of Crown Point's 'Early American' kitchens done in black painted cabinets with a combo of wood and grayish granite counters...So light colors are not your only option with paint. I've seen 'Colonial' done in reds, greens, and gray blues. What other colors are going on in your house (on architectural elements as well as your other furnishing and decor)? What other color of wood? Is all the trim painted or wood? I think that besides continuity of style it is good to have continuity of the architectural detail colors, like on wood trim. Keeping it simple is good advice, since that always seem to better stand the test of time and fit into more types of styles and decor. If the builder wasn't fanatical about doing authentic colonial details, which would give you cues from which to work, I wouldn't worry enough about the integrity of the 1970s version as to limit all of your material options, like granite color. You just want to avoid styles that will jump out as being different from the rest of the home...as if you've stepped into a different house. But you should have the flexibility to allow your own personal preferences and style to shine through. Here is a link that might be useful: crown-point black kitchen

Elizabeth, the floors have to go as they look better in photos. In person they scream cheap. It is cheap laminate. I will also have bare spots where the wall will be removed that I have to fix up. I was planning on putting some tile in the kitchen area but may just do hardwood throughout the whole house. I have also heard that the ikea cabinets hold up rather well but it seems that they use quite a bit of MDF with a foil over it. I personally would prefer a wood face as that sees quite a bit of abuse and potential liquid spills (I am just at the beginning with a 3 year old and 1.5 year old).

With the possibility of multiple cooks in the house, and children who will also be learning to cook and help in the kitchen, I'd include a prep sink on the island. Helpers can load or unload the DW, or gather dishes to set the table, without crossing into the prep path. I increased the seating overhang to 15"--the minimum recommended by the NKBA.I, too, live in a multi-generational, multi-cook, household--my daughter, her husband, and their two children live with me. I love my second sink!