New to flipping. Question on using contractor vs. handyman roles

[Brad Coleman]

Hi. I'm new to flipping homes but have been doing a lot of lurking on here and have been reading many books. One area I could use some clearing up on is the roles of a contractor vs. a handyman. Should you have both? If so can someone explain how to best manage roles in a flipping project? Also, should I use my own electricians, plumbers, and roofers or allow the contractor to subcontract to people he/she works with? It seems easier/and more efficient to have the contractor be able to identify problems and estimate total costs than piece-wise a rehab estimate together. Any help is most certainly appreciated.