If it's your first grow I recon you should go with something tried and tested.
No grow reports on the Ultimate yet so it's an unknown! Not something you wanna do on your first grow.
This forum is flooded with people growing Killer Skunk from UGORG. If you grew that you'd have about a thousand people here to help out!
Otherwise you could go with something like Skunk #1, northern lights or white widow or any of the hundreds of strains that people are always growing