If they run to the orders gates and try to fight them, there are many problems.
1) They don't know how many people they are up against.
2) They don't know how they can 'destroy' or stop them.
3) Just the three of them don't have the resources.
The problem with Daniels suggestion is that if they start running again...how long (how many videos) will they be running for? We'll see them jump from motel to motel...?
I think that they need to do exactly what we have had to do from the beginning. They need to investigate the order, just like Tachyon said to in the Gemma videos. If they investigate the order, they will discover their weaknesses and faults...and what has went wrong in the past.
They should investigate by either
1) Use Daniels Breaking and Entering skills to infiltrate the order and steal information (like Tachyon has done in the past).
2) Bree needs to reveal to us what she knows and they should look here on the forums for what we find. After all, 400 people searching for 1 thing is better than just 3. ... That and we have massive Google Skills

3) Investigate past cases...such as Cassie. Figure out what REALLY happened to her.
or
4) Your suggestion below.