alternate sql statement

I wrote an sql statement as follows
SELECT a.proj_name, billable_offshore_members,
               non_billable_offshore_members,
               (  nvl(billable_offshore_members,0)
                + nvl(non_billable_offshore_members,0)
               ) total_offshore_team_size
          FROM (SELECT   proj_name,
                         COUNT (offshore_onsite_notrep_flg) billable_offshore_members
                    FROM ta_mis_emp_info
                   WHERE fortnight_no = 2004031
                     AND billable_flg = 'Y'
                     AND offshore_onsite_notrep_flg = 'F'
                     AND project_id NOT IN ('SBU', 'PROCESS')
                GROUP BY proj_name) a,
               (SELECT   proj_name,
                         COUNT (offshore_onsite_notrep_flg)non_billable_offshore_members
                    FROM ta_mis_emp_info
                   WHERE fortnight_no = 2004031
                     AND billable_flg = 'N'
                     AND offshore_onsite_notrep_flg = 'F'
                     AND project_id NOT IN ('SBU', 'PROCESS')
                GROUP BY proj_name) b
         WHERE a.proj_name = b.proj_name(+)

Which produces result as
P1                      7          1   8
P2                      5          1   6
P3                      4          1   5
P4                    56          1  57
P5                    12          4  16
                                                                                                                         
Now my question is, Is there any better alternative sql can be written?
I tried something, but that didn't produce desire result. Which is
SELECT   a.proj_name,
         COUNT (a.offshore_onsite_notrep_flg) billable_offshore_members,
         COUNT (b.offshore_onsite_notrep_flg) non_billable_offshore_members,
         (  NVL (COUNT (a.offshore_onsite_notrep_flg), 0)
          + NVL (COUNT (b.offshore_onsite_notrep_flg), 0)
         ) total_offshore_team_size
    FROM ta_mis_emp_info a, ta_mis_emp_info b
   WHERE a.proj_name = b.proj_name(+)
     AND a.fortnight_no = 2004031
     AND b.fortnight_no(+) = 2004031
     AND a.billable_flg = 'Y'
     AND b.billable_flg(+) = 'N'
     AND a.offshore_onsite_notrep_flg = 'F'
     AND b.offshore_onsite_notrep_flg(+) = 'F'
     AND a.project_id NOT IN ('SBU', 'PROCESS')
     AND b.project_id(+) NOT IN ('SBU', 'PROCESS')
GROUP BY a.proj_name

Which produces result as
P1                      7          7   14
P2                      5          5   10
P3                      4           4   8
P4                     56           56 132
P5                     12            12  24

CAN ANYONE PROVIDE SOME BETTER ALTERNATIVE?
Thanx in advance,
bhombal