Well you can do that, but I'd take a little time and research the process of flashing ROMs. It is safe if you know what you are doing and have the right tools. As a start I'd do a little reading on what exactly flashing a ROM does and the tool most often used to do it...SafeStrap. Very seldom do you hear of a user bricking their phone by rooting it or trying to root it. Root is very safe and pretty simple. Flashing ROMs can get you into considerably more trouble...the worst case is a totally bricked/unrecoverable phone. So, enjoy root, download some apps that require root, do some research on flashing ROMs and then reading the subforum here on this forum about hacks/hacking. Another important aspect off flashing ROMs is to know as much about the ROM as possible. The problem with many ROMs is that not everything works...camera, some apps, bad battery life, bad data connection or dropped data etc.