Dear client,
As per your given information, I would like to discuss more on this, please consider my proposal.
1. Previous experience customising, integrating with ActiveCollab
Answer :: Yes I have experience
2. PHP knowledge / experience
Answer :: I have 7 years of experience in PHP, 10/10
3. Cost and timeframe with milestones
Answer :: approx 100 hrs & 25% mileston release
4. Size of Team
Answer :: 45 + Dedicated developer, Project Manager, Developer, Coordinator, QC, Designer.
Thanks
Milen