Three billion logical reads?

Part 1: If I have a table of 80 million records and I outer join that to twelve other tables, and the tables are accessed with nested loop outer joins against non-unique indexes having a blevel of 3, and if there is only a 50% (say) chance of there being a matching record in those tables, then is the number of logical reads to perform the join equal to something in the order of:    

  80,000,000*12*(3+.5)    

  ?    

  In other words, around 3.3 billion logical reads? Or do I need more coffee this morning?    

  Part 2: What would you say is a reasonable ballpark time for a logical read, on a decently equipped server with SAN storage? Millisecond? Less?            

  Background: I'm stuck in version 9 with large tabes outer-joined to many smaller tables -- no inut join swapping and hence no (reasonably efficient) hash outer joins.

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