Double The Profit or Trouble

My husband recently finished our first flip/rehab in Sept 2015 and made about $10K. We are now under contract on two properties each SFH. One to close 11/9 and the other to close 12/1. We are excited but nervous to have to properties at the same time. Our goal for the next 1 year is to complete 6 flips.  We are using a hard money lender, Bridgewell Capital. So far the experience has been pleasant but we have not yet closed on the first property yet. They only require 10% down of the total (purchase+rehab) + fees and a interested rate of 12.99%.