Fortunately you are in luck for the most part. I planned the circuit so that it was close to access points where possible. The reason for this is for emergency exits as well as food and gear drops. You will only have one night where you cannot drop off food and supplies. I have noted them below.

Day 1: Accessible via 4WD at 8 Mile Flat
Day 2: Accessible via 4WD at Bluff Hut
Day 3: NOT accessible by vehicle
Day 4: Accessible via 4WD at Speculation Road
Day 5: Accessible via 4WD at King Hut along the King River
Day 6: Accessible via 4WD at Craigs Hut
Day 7: Mt Buller

There will be a lot of driving required to access all of these points and you will need a 4WD for most of them.