Sivas,
When you have sufficient time to cover the entire syllabus at least 2 times, it is advantageous in writing all the 4 modules at one shot. This will entail the benefit of surplus marks being set-off in other papers and help you to exceed the aggregate marks of 400.
However, in your case, since you are entitled to exemption in Module 2 - FTFM and Module 3 - ATLP, it becomes very important to score minimum of 50 marks in CRI and SMAIT, if you are applying only for these 2 modules so as to get benefited from exemption.
Not sure whether you get the benefit of set-off of surplus when you have an exemption already from your previous attempts.
The remaining papers are fully theory oriented, and requires you to revise them at regular interval. As you are able to study for1- 2 hours daily and since five months is at your dispense, you can cover the papers, provided you accelerate the studies one month before the examination to allot more time.
Best wishes
Sathish