Using a fully quallified domain name for a local IP address?

[Man In Tan]

I'm setting up a site for my family on my local server, but I'm the only one who seems to be able to remember the address, 10.0.0.2. In addition, this only allows for one site. So, I want to set up a more human-memorable name. Being a Mac-lover myself, I'd love to be able to use the built-in .local local domain option, but everyone else is on Windows, and it doesn't seem to be compatible, unless I edit everyone's hosts file every time a site is added or removed. I don't want to set up a local nameserver, so I was thinking about using the global DNS to handle it. I did a test run, and my DNS provider is sending the local IP without any issues, so compatibility isn't a problem.Is there any disadvantage or reason why I shouldn't point a fully qualified domain name, such as *.local.domain.tld, to a local IP address?