Why? I think your design is fine for an initial minimum viable product. Furthermore, I think the product looks interesting. I don't doubt there is a market for something between http://monitor.us and Nagios, especially one with a clean, simple interface.

My advice would be to forget the redesign, get some minimal set of functionality working really well, turn off the rest, and start a beta. I'd be interested in participating in that beta.

EDIT: Feel free to contact me if I can help (with advice or a beta). My email is in my profile. I recently went through the process of finding a low-cost monitoring solution for a few servers so can give feedback in that regard.