It is very critical that your new solid wood flooring acclimatizes minimum 30 days prior to installation. If you are going with an engineered product timelines would be cut in half. It is very important that your new flooring get delivered right after the completion of the drywall/mudding stage of your project. Each bundle is carefully stick-stacked and a fan placed on the pile which allows for good air movement and helps the floor acclimatize to it’s new surroundings.
Once installed and finished the humidity in your home needs to be maintained in the 35%-45% range, this will ensure that your floor stays tight and you have very little if any movement during the winter months.