Charting Decision

It is now only a little over a month before we sail north. After a non-stop sail to Mooloolaba, Joy and I expect to spend most of August and September cruising the Queensland coast, getting as far as the Whitsundays. The boat is just about ready (as long as the antifouling and diesel service gets done in the coming weeks). One outstanding decision is still which charts to purchase.

Here's what I've got at present:
Electronic:
Fixed GPS wired into instruments via Seatalk with NMEA interface (no dedicated chart plotter).
Backup portable GPS with NMEA interface.
Laptop (nice new HP pavilion with wide screen and long battery life)
Nobeltec Visual Navigator software (which I've had since 1999, upgraded to version 6.5)
Nobeltec Chart pack covering the East Coast of Australia from Gabo Island to Hydrographer's Passage. It hasn't been updated since 1999.

Paper
AUS 809 Pt Jackson to Port Stephens
Crawford's Mariners Atlas Pt Stephens to Bundaberg
The cruising guides previously described
Alan Lucas' NSW Coast cruising guide

And I'm about to purchase:
The 300 series maps (1:300,000) covering from Norah Head to Whitsunday passage.
AUS252 Cumberland Islands and Whitsunday Passage
Qld Dept Transport Great Sandy Straight series charts
And...

Shall I get the Nobeltec chart pack updated or should I take the opportunity to switch to chart plotter software more commonly available in Australia?

I had a play with MaxSea, which I didn't find very intuitive to use. Seafarer software still uses raster based charts. C-Map charts seem to be the most commonly available in Australia for both dedicated plotters and PC based systems. But in any case, it seems to me that you should always have up to date paper charts on board anyway. And shall I purchase a single update or get a subscription? Too many questions and not enough answers.