Tip: When determining a time limit, remember that players won't be as familiar with the level as you are. If you normally complete the level with the timer around 100, others might run out of time on their first try.
Channel volume levels are off but aside from that, it's a faithful unsampled port. If you'd like to correct the volumes, start off by dropping the global volume to w240. You missed a volume change on the first channel (last note I think).