I think it is a very nice name.

Yes. You can remove "of" as you have done. Nice job. I also agree with Jerry that "could you give us an additional 5% discount" is the most natural.

They are pretty much the same.

Hi. Here are some general suggestions: I am sleep-deprived most nights because my son wakes up several times a night. Most of my efforts to nap during the day, while my son is sleeping, are to no avail. I noticed that when he sleeps on my belly he tolerates his bouts of colic more easily. That's why I let him sleep with his tummy on my tummy, and that's why I usually don't fall asleep until 2 am.

An envelope is a container and has boundaries. Pushing the envelope is similar to "take it further", and is referring to extending the boundaries. Opening up possibilities.

"It's a piece of cake" This means that something is easy. "ain't no thing but a chicken wing" This is a fun, slang expression. It's a play with language because it rhymes. I would say it means that something is not a problem. Not a threat. It's a small thing, like a chicken wing.

Here are my suggestions: I'll have to study hard to pass the exam. I'll have to study hard in order to pass the exam. I'll have to study hard so that I can pass the exam.

It really depends on the usage, but in general you could say that people get older, and things like wine and cheese are aged. However, you could say that someone is "aging well". If you want to include some example sentences then I can give you specific suggestions.