Multiple jobs under 1 NOC and current job under different NOC

Hi All,
It would be a great help if any one could address my query.
I had completed MY CA in January 2015 and after that started job and these are as:-

  1. First job for 6 months with my Principal CA on cash basis.
  2. Then another Job in a CA firm in delhi for 6 months followed by Job in industry for 5 months
  3. Then 4th Job in a reputed CA firm for 18 months followed by Job in investment banking firm for 3.5 months
  4. Currently work as credit manager in a leading bank since last 4 month’s.

My problem is though I have 3 years experience in a particular NOC but they are continued for less than 1 year expect one that i continued for 1.5 year. Also my current employment falls under different NOC. Would I be able to get points for experience of 3 years or more under express entry.
I have CLB 9 in IELTS if 3 years work-ex is considered than my points would be 462 otherwise 437.
Bit confused. Need fair advice/ comments.
I have all appointment letter along with relieving and other relevant documents to prove my experience.