I am a US citizen, I will turn 21 in another few months. I am currently studying in college. I would like to sponsor my father's greencard, he is currently in US and on L1B visa. My father is from India, but I read that there is no wait time for immediate relatives so I believe I can file i130 AND i485 together. Also, my father already have 40 work credits from social security, so I think I can be exempted from financial sponsorship evidences. Need guidance and support from experts in this group on my assumptions and the next steps. Thank you all for your help.