Scraped it in 2:58
Took me a few attempts and had 70 dinos in the park in total on the run through that was successful.
Here's how it went down:
3x enclosures were created (not all at once due to money) to be fed by 1x creation lab. First I put about 5 trikes in, then a few Huayangosaurus in a separate enlosure. Then added Edmontosaurus & Struthis to the Trike enclosure. 3 Ceratosaurus to the third enclosure got me my first star while completing as many contracts as possible to increase funds as quickly as possible.
After 1 star I focused on getting all the species I could from the American digsites to get me to 2 stars, plus I think adding Chrictonosaurus and then the raptor DNA (but not incubating any yet oh no!). By getting all the North American species, when you need to get the T-Rex DNA your dig team will more likely return Rex fossils cos you maxed out all the others. If they don't you can also make a fortune selling the DNA of Edmontosaurus, Triceratops, Dracorex, Ankylosaurus, Stuthiomimus etc. Also tried to feed Dracorexes to the Ceratos to boost infamy.
I hatched 1x Rex into big enclosure of Diplodocus and Corythosaurus and put a gyrosphere on for the guests. This got my the 3rd star when I added Brachios in. Next I made 2 more large enclosures, one ready for Indominus and the other just as an option in case I needed either Camarasaurus, Spinosaurus, Indoraptor or Giga to eventually gain the 5th star (turned out I didn't need any of them!). Adding more sauropods in the massive Rex/Sauropod enclusure, plus hatching Indominus and feeding it dinos for infamy got me to 4 stars. However, the Rex was hunting too many dinos so I moved it the 'spare' enclosure above and increased it's combat infamy by feeding it Baryonyx as much as I could afford while replacing it with 2x Metriacanthosaurs in the Sauropod enclosure.
For the final star - I got this by tweaking the shops/restaurants/fun attractions and adding as many Dilophosaurus as I could to the Ceratosaur and Indominus pens. I quickly made a separate small enclosure and added 3x raptors and few more dilos keeping an eye on the guest satisfaction scores.
The big difference from earlier fails was that I left putting raptors in until the last 10-15 mins which I think is key cos they're the hardest to tranq if they get loose in a storm and this wastes so much time!
Also to note, there was no need for a monorail (preferred funds for increasing dino populations for variety & combat infamy). I only added Science and Security buildings (no Innovation Centre as this also is expensive). And finally I only researched about 3x genetics - the shark DNA mainly, plus all the medical research was completed.
There is still a bit more to it than the above because the layout is quite important to an extent so that you don't cause yourself problems as the park expands but increasing the dino rating I found way harder than getting the facility to be 5* so if you're trying for this trophy and getting stuck, I hope something can be learned from this post. Good luck trophy hunters!