I would ask yourself how you want to engage with sculpture.  For some people it is pulling into a big circular drive with a large work in a reflecting pool that will be seen every time you enter and exit the home.  For some, it might be positioned so that it is always in view from a home office window.  For others it might be a focal point in a living or dining room.  Your life with your art collection will be different for each collector and each site.  My basic guidance is put it somewhere that you can enjoy it every day.  I would be happy to talk through the pros and cons of all kinds of sites in a consultation.