Get everything you can have delivered, delivered. It's going to take time to move furniture, prep self-serve food, and pull together a playlist. Take advantage of handy apps and services that will help you do the heavy lifting. This will give you time to really maximize your space.
Minibar is available in most major cities now, and will save you the most time when it comes to party prep. Pro tip--schedule the delivery one day before the party, just to have one less thing to worry about as you're prepping your space for guests. This will also give you time to chill whatever needs chilling.