I-130;I-485 simulataneously for parents

[mpnpsp2]

Hi Guys

I am looking to file for green card for my parents who just came to the US on a tourist visa a month back. My questions are -

1. What is the risk to doing this given that they have only been in the US for a month?
2. Can I-130 and I-485 be filed together?
3. Additional docs needed are G-325a, I-131, I-134, I-693 and I-864?
4. Should the medical test be done and included in this packet?

Thanks a lot in advance

Regards
Mahesh