LTE bands for Mikrotik compatible 4G LTE cards:

R11e-LTE

• LTE Category: 4 (150Mbps Downlink, 50Mbps Uplink)
• LTE FDD bands: 1 (2100MHz) / 2 (1900MHz) / 3 (1800MHz) / 7 (2600MHz) / 8 (900 MHz) / 20 (800MHz)
• LTE TDD bands: 38 (2600MHz) / 40 (2300MHz)

R11e-4G (only 3 bands can be selected at once in RouterOS)

• LTE Category: 4 (150Mbps Downlink, 50Mbps Uplink)
• LTE FDD bands: 3 (1800MHz) / 7 (2600MHz) / 20 (800MHz) / 31 (450MHz)
• LTE TDD bands: 41n (2500MHz) / 42 (3500MHz) / 43 (3700MHz)

If you are ok with pppoe instead of LTE interface then EC25-AU has the best parameters for Australia

• LTE/4G Category : Cat-4
• LTE/4G Band : B1/B2/B3/B4/B5/B7/B8/B28/B40
• UMTS/HSPA/3G/WCDMA Band : B1/B2/B5/B8
• 2G/GSM/GPRS Band : B2/B3/B5/B8