The most conditions-efficient drills combination to maintain with max 10% individual bonus with daily 9% conditions cost would be:
1) warm-up x 1, video analysis x 1, skill drill x 4 (1 with ad + 1 without ad), or
2) warm-up x 1, video analysis x 2, skill drill x 3 (1 with ad + 1 without ad)
The team bonus ‘deficit’ could be easily be covered by 8+ reserve players with multi-positions (They could be also be used for draw manipulation, as well as pre-training extra positions like MC, DC & ST and SA to 49/50 to fulfil those special sponsor tasks).
As suggested by Siddharth, just use a few extra ads to keep bumping up the bonus x 2 with 6 x 0.75% drills.