wow...stop...put down the tools...and start reading for a good month before you attempt this swap...judging from your knowledge (no offense) or honda motors, their components and compatabilities I would hold off on that swap...but getting to your questions

A: there is no such thing as a b16a1
B:no your trans, and header will not mate up
C: you can have your ecu chipped or get the p30 ec
D: yes your CAI will mate up.
E: you will just swap your motor harness off of your d16 onto the b16
F: judging as said earlier by the lack of knowledge I would estimate a lot longer than a week to do the swap
G: you will need to replace your rear mount bracket with one from a GSR or 99 SI
H: if you order the b16a first gen you will have to either buy a hydro tranny for it, or get the cable to hydro conversion kit through HASport.
I have the b16a swap into my 95 dx, it took me around 2 months because I hopped on the train without knowing what I was really getting into, but I at least knew the basics of B and D series honda motors. I could prob do one now in a weekend, but dont think your first swap with limited knowledge is gonna be quick, painless, or easy.