If there were a plea deal on the violent crimes alleged, or some form of lesser included, I doubt that JB would do it as anything but a "complete package deal".
This would include all the economic crimes and pretty much everything she has pending which carries any potential jail time. Part of his job is to "wrap up the cases" so to speak.
Defense counsel's selling a package to the client who wants to know specifically how much time they will be doing, down to a nanosecond.
If felony charges such as the string of check charges, are left out of the deal, that leaves Casey exposed to a ton of on & after time.
Nothing says any cases handled after a plea on the violent crimes would be sentenced as running concurrent with time now being served, if the theft crimes ended in jail time while Casey was serving time for Caylee's death.
Nothing would prevent her being sentenced to many years, with that sentence to be imposed only after the sentence for the violent offenses has been satisfied and served. i.e. time on & after.
Even if that scenario occurred and the time was sentenced as concurrent, that starts the time running concurrent from the day of the subsequent sentencing.
Concurrent time generally does not automatically relate back to the original date of sentencing on the crime which already has the defendant in prison.
Whether or not the second concurrent sentence relates back in time, so as to start from the day the first sentence was imposed, is a separate issue and is not legally guaranteed.
If the economic crimes were not packaged in, Casey would have to be advised that the time to which she was pleading was not necessarily all the time she was going to get.
She could get a fantastic deal on manslaughter, for example, and end up getting more time for the check stuff than for the violent offenses.
I cannot imagine a plea deal which does not include everything would be accepted.
Of course this is a wild case with wild twists and turns so nothing is certain.
Just wanted to offer my humble opinion on whether or not it would be an all or nothing scenario for the defense.
FL Stat:
921.16 When sentences to be concurrent and when consecutive.--
(1) A defendant convicted of two or more offenses charged in the same indictment, information, or affidavit or in consolidated indictments, informations, or affidavits shall serve the sentences of imprisonment concurrently unless the court directs that two or more of the sentences be served consecutively. Sentences of imprisonment for offenses not charged in the same indictment, information, or affidavit shall be served consecutively unless the court directs that two or more of the sentences be served concurrently.