Trusts, Estate, and Inherited IRA Questions: Who do I need to talk to?

So I have a weird problem: My mother passed in January, I am he executor of the estate, and the trustee of the trusts she left behind to take care of her children (myself and three siblings). For the last two months, I've been working with our estate lawyer to get everything set up and squared away, and most of it is proceeding at a good-enough clip. A non-trivial portion of the trust is an annuity death benefit, with the bonus difficulty that this annuity was inside an IRA. So it's an inherited IRA containing the death benefit from an annuity. My need is:

  1. I need to claim the death benefit and move it into the trust's name, but I'm having a very hard time finding someone to help me properly assess and prepare for the tax implications.
  2. My estate lawyer's firm has a tax division, but I would rather not use them given that they are very expensive (AMLAW100 firm known for their estate and trust division). My lawyer recommended I look for an outside accountant.
  3. My company's fractional CFO/accountant whom I trust absolutely said that he doesn't understand trusts so wouldn't feel comfortable, and suggested an estate/trust accountant.
  4. The recommended estate/trust accountant has indicated (not in so many words) that his practice basically just prepares taxes and isn't equipped to provide the kind of consulting services I'm asking about and doesn't have any recommendations beyond what I already know (trust tax brackets super low, five year maximum distribution period on inherited IRAs, etc.).
  5. A CPA I spoke with regarding estate financial planning didn't know anyone who offers tax planning rather than just tax preparation services.

So now I'm out of leads and about to start cold calling people or just suck it up and pay $1,200 per hour for the lawyers to deal with it. But before I do, I was hoping someone here can point me in the right direction:

Who should I be looking for for tax planning and when I have specific questions about the tax implications of specific actions like which policy distribution option (out of the 8,525 offered by this IRA annuity) I should select?