Not familiar with the court process in HK is there any chance to find a lawyer willing to take this on even just supervising juniors on a contingency fee basis? I have no clue if contingent fee agreements here are even permissible.
I do know that keeping the legal court processes to a bare minimum required is essential to both keep personal time and costs down as well as not ending up with the court frustrated with your lack of knowledge.
I am not a lawyer but have acted as counsel for a few years for a consumers association in quasi-judicial evidentiary proceedings before a commission panel where the process including filings et al must be exactly to the rules. Lawyers for the applicant in these rate hearings can and will object and stop anything not within the rules and this frustrates the judges.