How I'm going to record my guitar.

I've been searching the best way to record my guitar, and I've decided to record in this way:
1st. Conect my guitar to a Boss Metal Zone pedal.
2nd. Conect my Boss Metal Zone pedal to my Roland Cube 30x amp.

3rd. Use a Shure Sm 57 microphone (I have to buy it) conected to the CPU to record it.

If anyone of you knows a better way, let me know it :))
Thank you guys!

Ander García.