Normally you place the firewall tokens when you need them because there is a good chance that you never will, but you can place them in the setup if you like.
This is unexpected. Why is there a good chance you'd never have to use a firewall?
Don't you have to face the firewalls anytime you try and hack a Machine?
And, the only way I can see that you could get to the
Dig Site is to hack a Machine and use its movement to get you there...?
(Assuming Machines can move across water E5 -> E3)
Without a Machine, starting from the
School (M), it would take
-2 Time for Players to get to
The Checkpoint.
Rules don't clarify if it costs
-2 Time to travel (walk) between two
Restricted Locations... assuming it does, players only have
4 Time left. This means they spend
-2 Time to get to
The Bona Towers (E), and then
-2 Time to get to
The Ferry (D). This depletes their Time resource, and they have no way to use other abilities.
If it only costs
-1 Time to travel between
Restricted Locations, then players would spend a total of
-5 Time to get from School to The Ferry. They would have
1 Time left to Investigate a Rumor, or Hack a Machine. But, forget about getting home on time!