Quick domain name advice again

im about to do my yearly domain name thing. i’m curious of two things:

A) If I have networked quite well my current address, do you think it would be inefficient to switch to a different name?

B) is www.kpl.us confusing to the average viewer? (my ‘company’ is k+ design). do you think a novice person will get it or will they try sticking a .com at the end?

the current address is www.projectkilo.net

thanks guys.