As per my opinion, you can segregate your projects into three catergories namely big, medium and small. Based on this you can form the teams such that you can complete the tasks fastly.
I suggest that you should be together in the outlines, so you will get experience in different topics of CFD, you can correct to each other for using methodologies and you can easily modify or change direction of your research if you stick at a point.
I am making an assumption that you want to be CFD application engineer (one who uses CFD software and solves industrial problem) and not the development engineer (one who works on developing CFD software).
Following are the milestones you need to cross during your "CFD Learning" journey.
Milestone 1: Basics of Fluid Mechanics and Heat Transfer Milestone 2: Fundamentals of Computational Fluid Dynamics Milestone 3: Learning commercial software(s) used in industry Milestone 4: Working on some industrial projects