Missing the important piece of a sound dampening room. Record in a closet with a bunch of clothes and the audio quality will be noticeably better than in your living room.
And no mention of headphones or speakers for yourself either.. Which then ties into the A/D converters which were earlier dismissed as superfluous..
My bet is that even if the mic is not quite as good, something like the focusrite scarlett solo studio pack (~199 - comparable to the 'pro' mic cited) will net overall better results since you get a full loop of prosumer/pro grade audio rather than just the input side covered.. not to dismiss the high importance of a good source track..
don't know this kit though; check sound on sound and soforth if someone is serious. I do have focusrite USB IF and it sounds great.