Well Abrams or Armata tanks are dead mate. You can get a Patria/ Badger with a 105 (direct and indirect fire) that will outgun them, be faster more nimble and have a platoon in the back. A Patria ATGM version with Ingwe or GB Mokopa ATGM will take out Abrams, as well. Keeping up with the infantry should be what it is about!
G&/T7 LEO tested for the Lav and Stryker was more accurate, had a higher kill rate and greater distance- Go Figure
Sure you are not going to have the protection of the Abrams, but you have incoming missile detectors, smoke, speed and counter source to overcome this.
If you still want tanks -" tanks are OK-maybe not dead" a Patria or Badger has greater range /quicker. You have some of these with squads with Truvelo's or NTW (sniper weapons - out to 2.5km) some Milkor grenade launchers and you practically dont need a Bateleur 127mm MRLS or a G6 with MRSI. Maybe some Abrams /Armata tank killers like the Rooikat 105.
Lastly price -Get more bang for your buck....
That with Tigers- prefer Rooivalk(obvious South African bias) and F-35's overhead the Australian Army soldier would be a one man army.