Believe it or not, this isn't a huge priority to law enforcement, least not where I live. It took them over a year to bring up any charges on me, and they knew exactly who I was and lived etc..
Even with all the ip logs/emails etc...they still needed the physical computer to build the case, which to them another six months etc...Use a vpn/fake info and you'll probably be fine as long as it's not hundreds of thousands of dollars.