I actually have three questions:

If any time remains or if time remains, which one is true?

For example:

If (any) time remains we will take a look at that

or "we take a look at that"? (In the latter part of the sentence, should we say we'll or we?)

And my last question is: can anyone suggest any other phrases to express this kind of situation? I mean if I have a number of certain things to do within a limited time, and I'm offered to do something else, how can I express my situation in terms of being able to spare time for things other than my main job? What are the ways of saying this?