Well as they are right now you have 30 minutes to get to and kill the boss and then 5 minutes for looting boxes.
I dont remember ever having a time limit going up so if there was one that was perfect as i never noticed it and just 8 mins or so coming down.
I cant imagine anyone getting to the boss lvl on the old beacon in 30 mins if they had never even been on one before just the maze alone was confusing the first time and that was with people who had been on one before.
I dont see the need for it to be a rush to get up just a rush to get down due to the ship exploding, some teams will do it quick others will take it more relaxed and enjoy the time on the ship with new soc members who are on their first ever beacon.
So i say no time limit going up and 8 mins coming down but hard to say seeing we dont know how long it takes to search the boxes before the ship blows as we have never been on the new beacons.
I have an idea why not get 8 of your staff and actually test the beacons and then you will know the time it takes i know "TEST" will be a strange thing but hey always a first time.