What does Yeah, that means that we’re gonna have our work cut out for us trying to get to them first. mean?

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He said it since 4:53 in this video when they're talking about Megatron need more 2 other Mini-con (small robots) to combine with his into a powerful sword and it would be their demise in the war.:

https://www.youtube.com/watch?v=Xmk163Yztsk

So what does he mean by "Yeah, that means that we’re gonna have our work cut out for us trying to get to them first"?

@amehdoreen5 The last question, she said: "Yeah, like I’m buying that one, Rad." and her friend named Rad answered: "Hey, would you just get off my case already?" when they just realized the girl since 2:39 in this video and everyone is hologram as she said she hope the male friends like Rad and Carlos are not disappointed about the fact is the girl is a hologram and she think these boys have a crush on that hologram girl:

https://www.youtube.com/watch?v=SBGZnQSlRJ4

What do they mean by "Yeah, like I’m buying that one, Rad." and "Hey, would you just get off my case already?" in this case?

@amehdoreen5 At 3:18 in the video

And if you want to figure out what is going on, you can watch it since 2:39 to 3:18 when they said these.