In an ideal world you would have a blend of top end and strength in depth, especially to win your home meetings significantly to gain the aggregate bonus point. In my head the the perfect makeup of a team to get you to the magic 39 points should be (or as close as you can get):
1 - 8.5 (Lebedevs 8.0 )
2 - 6 (Iversen 6.83)
3 - 7 (Kvech 6.58)
4 - 6 (Klindt 6.59)
5. - 7 (Lawson 7.09 / 6.91)
6 - 4.5 (Rowe 5.21 / 3.91)
7 - RS
Total 39 (38.82)