Wait until you have the bridge or its exact dimensions in your hands before drilling any holes.

The 201 has 19mm spacing which is fender replacement size.
1. If your neck is a 34" scale, then find the centreline on the body and mark it. Double check it.
2. With the neck mounted and your measurements double checked and very accurate, find the zero saddle point (34" precisely from the fretboard edge of the nut) and mark it across the centreline. Double check again.
3. Adjust the bridge saddles to their most open position minus a few turns and then line up the bridge saddles over this point referencing the zero saddle point line and the centrelines you drew on the bass. Double check everything. Then check it again.
4. Mark the holes and double check everything again.
5. Carefully predrill the holes and check it all again. Install the bridge and string it up.
The saddles can be in the open position when you set it up because in practicality, you only ever really need to move the saddles backward when setting the intonation. It might be nice though, to have a little adjustability in case you decide to change the tuning of the bass or switch to super light string gauges as our own Jason recently pointed out.