Hire a contractor or not?

[Doug Lovett]

I just bought my first flip from another flipper who sold it to me as a wholesale deal.  We had a good interaction and he offered to share some of his subs.  One of them is a renovation contractor who can do the whole job - and actually give a bid on this house before the flipper decided to wholesale it.  I haven't gotten bids on all of the work but this contractor said his bid was $11-12k.  I'm guessing that I could save $3-4k if I hired the subs and did some of the work myself.  

I can do basic tasks such as painting, changing out doorknobs, installing wood flooring, etc.  There are a few items that I would need to contract out to plumbers, tile contractors, etc.

Should I hire this guy that can do everything and spend my time on finding another deal or do the work myself/hire subs?