The next thing you'll want to consider if you own a large collection is if off site storage is a better option for you. There are companies that specialize in storing fine wines and often the have incredible ways to categorize your wines and make sure that your collection is safe and insured. It is also extremely convenient to keep your wines in these types of facilities because they can except wine shipments for you when your not available at home to receive them. They specialty storage facilities also usually have state of the art security equipment and back up generators in case of a power outage.
Wine insurance is also available for you if your collection is one of very high value and you need to insure it against any type of catastrophe or theft. Fire insurance on a large collection of wine may be vital if you plan to store your wine in your house.
Protecting your wine with proper storage, security, and insurance are definitely factors to consider if you plan on investing a good amount of money in a wine collection.