They are basically the same. But I think "print out" suggest that you want a physical copy. For instance, "My eyes get tired from reading the whole essay on the computer screen. Can you print it out for me?"

In the context, it appears that the question/request for counting spring rolls went back to the original requestor (mom)....with the requestor end up doing what she had request. Hence, "we are back where we began". The mom was initially going to count them and instead asked the daughter, then the daughter asked the mom. It's like drawing a circle...started and ended the same place. We often say this expression as "Coming full circle".

There is a slight difference. For #1 "I finish my work at 2pm", does not really express whether it's in the past, present, or future tense. If you use a specific time like 2pm then it's either past or future tense, or you could say "I plan to finish work at 2pm". Whereas, #2 "I'll finish my work at 2pm." clearly expresses a future tense by using "will".

For an interview, "medium" is not clearly understood. I suggest you put a number whether it's days, weeks, years etc. Example: I have 5 years experience in C programming language.

Just add "so" then it should be fine for casual conversation. "I have SO much work which is not finished." Other way to say it is "I have so much unfinished work"

If something is right up your alley, it would mean that the situation should be perfect for you or ideal for your skills and interests. For example: if you like math and physics, an engineer major should be right up your alley.