The secret to the 2:08 is to sneak a speed driver in. I tried a storage center - it lets you build green at max, but takes 9+ seconds to travel the distance.
@CapparFrank Well that's a polite way of phrasing it, thank you. Here's the NBM https://imgur.com/7K2YIua and a 1:06 https://imgur.com/e1vRWbR (tricky to max the green without going negative)
3/26 - 13:35, Tried to cap all 5 emitters between spore attacks, skipped fifth and went for the totem but still didn't make it. Somehow survived - image is from post attack.