Target rich system

I was thinking about a few ideas for a mini campaign.
The idea is one star system is more then enough for a fun campaign.
A defender may have several valuable targets to protect each one farther
into the system.  Lets say the system has 5 production sites.

The atacker has the ability to mass any target.  The travel time between
targets are all sub light measured in days, weeks or months.  Intel on
both
sides is limited.  As a for instance give both side 8000 points.  One
third
of the defenders assets are in system ships and fixed defences these are
known by the attackers intel.  The rest of the defending ships are
unknown
to the attacker.  What else should be defined?	How do we set up
encounter
zones for each target.	A simple table of time between points could be
used
to show times between targets.

				FTL zone	Out-station	       
Gas giant1 MB	Gas giant2 MB	Asteroid BC	Plt
FTL zone		 0			1		       
2			3			4		5
Outer-station		 1			0		       
1			2			3		4
Gas giant1 moonbase	 2			1		       
0			1			2		3
Gas giant2 moonbase	 3			2		       
1			0			1		2
Asteroid Belt camp	 4			3		       
2			1			0		1
Habital Planit		 5			4		       
3			2			1		0

This chart need not be quite so linear You can go from the FTL zone to
the
inner plt and never go near either gas giant.
Each side sets up were its subfleets are each time interval.  Any good
ideas
for fleet tracking?

Andy