Vested interest and multiple bankrupt companies under builder

Hi, my building is going under redevelopment but the managing committee and others insist on a builder who is giving 2% less space then other competing builder and has multiple struck off(bankrupt companies) listed under mca which can be seen online. following are more points to not go with the builder but managing comitee is adamant that our way or highway: 1. builder's mother and father(who is contractor) own a shop in our building which leads to vested interest majority voted for them to develop but minority were ruled out even law forbids. 2. 2/3 companies listed at his corporate adress are struck off. 3. his corporate address seems to be rented out but they deny. 4. builder giving 4 month rent in advance and no deposit for new rental. it requires 4-6months rent as deposit. 5. builder getting 4.1 fsi under 33/11b scheme of redevelopment but giving us only 21% extra space. he will get 4x space eg 1k x 4.1 = 4100 sqft and giving us 1200 total. one building next to us went for redevelopment it is rumored they are getting 40-45%. 6. he Is giving less corpus fund compared to neighbouring projects. 1k per sqft compared to 2-4k. I don't have legal proof because people share this orally. 7. builder has not developed any projects since 2020 and 33(11)b scheme was launched in around 2021. Real reason is bankruptcy. builder did not submit his balance sheet but a paper from CA saying balance sheet is net positive. 8. our fsi is 3.1 + 1 = 4.1 under 33(11)b because extra 1 fsi needs to be purchased from sra which is termed as ptc. builder does not have ptc he said in a letter that he will purchase when required. 9. if I file a case then builder will burn me with my new flat with poor construction or less sqft and court cases. 10. how much money will I require to file and win the case? 11. builder has willing to keep his shop as bank garuntee and nothing else. shop is valued between 1-2cr. which will be demolished with building. i have mentioned all possible points that I can recall at the moment. what sections I can apply and get stay order for this? because if the builder is indeed insolvent how to find out?