Concurrent filing, and form I-693/ medical exam

Planning to file 130, 485, 864 and 131 all concurrently, for my Dad's GC application:

Q1: Is medical exam and the completed I-693 form *REQUIRED* to be included in the whole package, or can I filed hte above package FIRST, and then later do med exam and submit I-693?

Q2: If I incude ALL stuff in my package, do I write separate checks (for I-130, and I-485), OR just one check with all appl fees included?

Thank you sooooo much!!!