Re: being printed
1. No. While "no time, no see" is an accepted way to greet someone after a long absence, you can't apply it to things like "long time, no visit this forum" and sound very natural.
2. The booklets being printed = the booklets that are being printed. I still maintain the difference between "which" and "that" so I would have written "The booklets, which are being printed as we speak, will..." to show that "which are being printed as we speak" is additional information, and not the part that tells you the exact booklets we mean.
3. "As we speak" means "right now, at this very moment." It doesn't work in the past, therefore, but you could say "when we spoke earlier."
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.