My name is Santosh but I can't register a santosh.com because it is already taken. Most extensions for Santosh are already taken. I was trying to register a domain with .sh extension but santo.sh would cost me very high and I can't afford ~$100 for just a personal domain and that's only for one year only.

Now I am thinking that I should register a sntsh.com. But there is a problem, will sntsh.com over my name Santosh don't create a SEO problem?

One more thing, that totally different from above topic. If I register a santosh.name domain which is not registered, won't it create copyright and any legal problems with other santosh domains?