To Fix the Drain Time Issues:
There is a lot of unnecessary break time in this map in my opinion, so I will give some suggestions on how to reduce it.
00:29:520 - You could probably map this up until the drop
04:12:829 - Same here, you could probably pick the map back up from here without leaving in unnecessary break time. There is enough going on here to map.
These are just suggestions though, you don't have to follow my word if you don't want to.