Ok ... lets start with the backdoor ROTH issue ... this ONLY works if you ONLY have non deductible contributions in the traditional IRA which is why you were warned to NOT convert the 401K yet. If you had the year end value of all your IRAs would have to be listed on line 6 of the 8606 which means only a % of the conversion can be non taxable.
Next moving from one IRA custodian to another custodian thru a direct trustee to trustee transfer can be done anytime without consequences.
Then ... you can continue to do backdoor ROTH as long as you only have non deductible contributions in all of your traditional IRA accounts.
