Two random grammar questions

A Chinese student said to me the other day "almost new".  I got to thinking, how would I say that in Chinese?  I think I would say, 崭新差不多.  However, can I say 几乎新的? 

I sometimes want to express something similar to this: "I aleady have five of them."

Which is right:

1. 我已经有五个了。
2. 我已经有了五个。
3. 我已经有了五个了。

This really is another 了 question.  I know that 已经 and 了 go hand-in-hand, but because I read before that 了 generally does not go with 有 to express completed action as 有 is a state and not an action, I am not sure what to do with the 了.