Depends on how you want to set up the bike.
Do you want a mid-motor with sprockets and chains (or belts and pulleys like Zero). You have less space for batteries, a con, but also have less unsprung weight, a pro?
Or do you want a hub motor with no sprockets or chains, more space for batteries, but also more unsprung weight.
On a sportbike that will be on relatively smooth asphalt roads, unsprung weight shouldn't be as much of an issue.
Mobipus makes a 72V 600A controller, for around $1425AUD, you can get them via https://ballaratebikes.com/collections/controllers
They are awesome controllers, very robust, and include a feature you might like called automatic FOC. You read about people talking about field weakening, well one method to do that is called FOC (Field Oriented Control). The Mobipus can enable field weakening automatically when you hit a certain speed. So say the controller can only normally go up to 88V, and that gives you 130kph. You can set the controller so that when it detects the 128kph (based on motor RPM), than field weakening will be enabled and you can go up to 160kph.
Field weakening lowers efficiency quite a bit, which is why this automatic feature is handy. Obviously, it would be better to simply get a motor that can do 160kph with the battery pack voltage you have decided to use.
The QS273 80H V3, with its default winding for a Kv of 14.5 (rpm/V) can do 160kph, with a 24in outer diameter wheel, if you supply it 96V. That's under ideal unloaded conditions. I would ask them for a custom wind, with a higher Kv, some of their other motors have a Kv of 16.2 (88V for 160kph), 17.7 (79V for 160kph), and 19.99 (70V for 160kph).
Also, just to note, you can't run PMSMs in series or parallel, they each need their own controller.