PSW switching to Tier 2 - Job title & SOC Codes

Hi, I have been offered a job as Officer and the organisation (an NGO) is willing to sponsor me for the Tier 2 visa.

I've been reading the Codes of Practice and the job title 'Officer of non-governmental organisations' is NQF level 3 but the job tasks under that job title don't really match my job description and also my salary is much higher. So I was wondering if my job could be classified under the code 2429 'Business, research and administrative professionals not elsewhere classified' because those tasks seem to be more in line with my job description. Could I suggest the code 2429 to my sponsor?

Many thanks for your help! Any advice on this will be greatly appreciated!