Basically a second OS is a good idea but dual booting still won't solve the problems with the first OS. They will still be there, just not being executed while you use OS #2.If you knew half as much about computers are you pretend to, you would have just installed a second OS along side Windows and configured a boot loader to switch between them. This is called Dual Booting.
SuN never claimed any problems with Win7, only supposed potential problems if it is removed. Since he does not want to run Win7 anyways, and is paranoid that deleting it could cause some sort of issue (which it would not), the best solution is to install a second OS, shrink Win7's partition to as small a size as possible, then simply let it sit until he grows the balls to actually delete it.