Yeah, it would require quite a bit. Note that while it can input a massive frequency band (10M to 3.5G), the sampling rate is quite small (~31MS/s). Would work much better as a spectrum analyzer than a time domain viewer.

You can definitely use it as an oscilloscope, but it's non-trivial and has many limitations. Recommend getting a cheapo analog one, or if you're already at the normal SDR price range, just going for a Rigol