Have you spoken to the strata about this? I only ask because it appears through your posts you first talk about suing the strata and in your second post you are going to talk to the OC?
Would not raising this issue at an AGM be better then trying to sue first?
Lawyers are only going to ask who have you contacted in the strata about this and what have they done?
I have been through a complaint process with a noisy neighbour and the fact that I had spoken to the offending party/parties on multiple occasions and then went to the Strata and then to the Council gave more weight to my claim when the police contacted me about my concerns.
Going the “I will sue first and then talk to people after” route will only cause the OC to be defensive and not at all helpful if you have other issues.