Did the same trip just before Christmas in an MS 75D with air suspension, including overnights at destination chargers in Atura Albury, then Cradle Mountain, Strahan, Pumphouse Lake St Clair and of course Hobart. Returned direct Hobart to Melbourne via ferry.
All super easy but a few comments:
There was a transient problem in Tesla charger Hobart in the RACT Hotel that they bent over backwards to fix. Really good.
There was also pressure on the MONA Tesla charger at the time so not as viable alternative as expected. MONA is also reputedly slow so the RACT Hotel is probably only really good charge option in Hobart unless have J1772 adaptor.
Charged 100% for trip Hobart back to Melbourne via ferry and would have made it but House of Anvers is ideal for topup to take the anxiety out - plus the refreshment is good!
As for the ferry, on one crossing we were recognized as 'wide' and put into a side lane.
It was expected to be a rough crossing so prior to sailing I turned off the alarm, put the suspension to very high, and locked it up In jack mode as I think is recommended for truck transporting. Figured best having lots of suspension travel, and not having self leveling fighting the ferry movement all night, Overkill maybe but didn't seem to have downside. In the end it really was a reasonably rough crossing but car had no problems.