Wow...lots of good responses here - maybe more than you had hoped for...?
I've been flipping SFR's for a pretty long time, during good and bad markets. From my experience, it takes either tons of time and money, or almost none at all.
The recommendation I would have is read through all the great materials BP has as well as other sources, looking for the niche of the REI industry that would best suit your skills, time availability, and available capital. One way to get into flipping with the amount of capital you have (e.g., some portion of your $450K) would be to get in on a joint venture with someone that can give you some "hands-on" experience and coaching while you provide some (or all, depending on your risk appetite) of the working capital.
You might be able to find someone in your area interested in such an arrangement here on BP. Also check out meetup.com for a local REI group. That has been a good source of deals for me in the past, here in the Southeast.
Regardless...do your research. With your motivation and drive, there's little doubt you'll be successful!