Charge whatever you can get away with. Set a number and show willingness to walk away.

I used to do cloud consulting from an LLC after doing client-facing enterprise AWS consulting.

Consulting experience TLDR braindump:

  * Enterprise shops look down on people that don't charge enough.
  * Some shops feel entitled to get a bunch of stuff for free.  Hold your ground and explain you have bills to pay and can't set a new precedent.  Your time is valuable.
  * Free assessments are an easy way to determine how much crap and hand-holding you'll have to deal with.  It'll also let you show you know what you're talking about and be able to 
  * Research solutions before raising proposals.  Anything you raise will basically be put on you to support.
  * Raise prices every year or two.  It'll be less of a surprise if it's a fairly regular thing and it's mentioned ahead of time.
  * Work on- vs. off-site has +s and -s.
  * Work with fun clients that pay on-time and don't do hourly.  Hourly is for noobs that take too long.  Milestone-based at the same comfortable hourly rate puts the onus on you to always deliver.
  * Getting a % of the milestone upfront for a good faith deposit.
  * Don't do Net 30 or + ever... Collecting will be a hassle.  Net 10 -2%, 15
  * Master agreement
  * Put milestones in writing to be clear.  (Contracts are only as good as the relationships on which they are written.)
  * Engage with the highest ranking person you can, and you'll more or less own the place.  (Just don't get too cocky, instant hubris.)

HTH