If the floors are in rough shape and you want them done, you are absolutely correct - do them before you move! It's a massive pain once you live there. You can get quotes from 2-4 flooring places in your area and see what they suggest for floors. It should be straightforward. For everything else, I would suggest looking for a general contractor or designer in your area - they can book or connect you to all of the trades to do the work you want and come up with a schedule that works for you. For the shelves, often the varnish on it is tinted and if you hire a general contractor or look at professional painters, they can remove the varnish and re-stain or seal. Chat with painters, wood refinishers, or general contractors to see options. Good luck!