First time travelling US with 5 months valid h1B visa

USA H1B Visa
1

Here is the scenario in my case:

  1. Valid petition ending 31 Dec 2017
  2. Got the H1B visa stamped in Nov 2016 and visa is valid till 31 Dec 2017.
  3. Never traveled on this visa yet. I am planning to travel by 1 Jul 2017

My question are:

  1. Would there by any issue in my case at the port of entry?
  2. What is the minimum validity required for traveling on H1B visa, especially when I have never traveled on that visa?
  3. When should my employer apply for the extension?
  4. If a person able to save 1 lakh in India after major expenses, is it right to go to US now with risk?
2

  1. There should be no issue at POE

  2. You can travel anytime before petition expires

3)Extension should be applied before 3-4 months of Expiry

  1. You should atleast stay in US for few months and decide yourself.