Niche Related forum

Hello Everyone,

I am looking for link building experts to start forum posting for my Automotive Niche Website. Based locally in Australia.
We are starting forums posting for the first time so we do not have any prior domains list.

Primary task description includes.
1- Research Domains in below order.
- Automotive Niche - Australian based domains (.com.au - Medium to High Authority)
-Automotive Niche - World Wide domains (.com - Medium to High Authority)
-General Niche - Australian Based domains (.com.au - Medium to High Authority)
-General Niche - World wide domains - (.com - High Authority Only)

2- Creating Profiles on researched domains.
3- Start posting and contributing on different posts to make profile legit.
4- Start promoting our product description with sensible back link.
5- Skip #2 and #3 if you already have some domains with old profiles.

Regards