One note of warning. I don't believe you listed an existing Traditional IRA. If you do have an existing TIRA, and you have a basis (non-deductible contributions) in that TIRA, DON'T roll over the 401k until you fully understand the tax ramifications of any roll over. I have a basis on my TIRA, and the tax ramifications is why, even after 23 years of retirement, my 401k money has NOT been rolled over.
I was in a similar situation when I retired. I had a non-deductible tIRA with a large basis and a large 401k with no basis. When you do a Roth conversion the portion that is taxable is determined by the size of the basis, you can’t selectively choose the non-taxable basis. e.g. if the basis is 50% ($50k tax free) of a $100k IRA then if you convert $40k to a Roth you will be taxed on $20k and the basis reduced by $20k. However, if you roll over a 401k of $400k before you start making conversions then that $50k of basis is now only 10% of the total so if you then convert $40k you will be taxed on $36k and your basis reduced to $46k. You will retain a basis until the very last conversion and the value of the IRA is zero.
I decided to convert all of my IRA the first year I retired and the the following year rolled over my 401k to an IRA. That way I had no basis going forward and all the non-deductible contributions in my basis was now tucked away in a Roth and future growth was no longer tax deferred, it was tax free.