No, go ahead and finish it (mp_theguns) i usually have tons of other maps to do anyway. And don't worry about it, it happens i mean hell, saves me time to work on other things, just let me know beforehand if you start a map that's on my to-do list so i can take it off and work on the other one's.
Can't wait to see how Brescia turns out, that ain't a bad map.