Sole custody of children

If the ex has a lawyer then for sure she needs a lawyer to help her.

If we create a will giving everything to each other in the event of death, can this override the death clauses in our prenup?

You have to make sure your pre-nup and your wills are in sync so as to avoid later confusion

Will I be granted credit back to date of filing for anything over paid? If so will that be taken off future support payments?

Yes in any case you will be given relief back to the date of filing of the case.

a written contract is presumed valid so yes unless it is successfully challenged.

My baby's mother is trying to file for joint custody of our son, she is restricting me from seeing him til then, what can i do?

Court's take a long time however you have no choice but to file your case with the court.

What steps do I take to stop paying child support for an 18 yr old child in Tampa FL?

file a petition to terminate the support asap.

Required income disclosure to sell business or buy multi-family?

each contract is different, typically the buyer will want to see your books for at least the past 2 years.

My sisters off/on boyfriend has threatened to take their son to another state without my sisters knowledge

she needs to file a petition for sole custody asap.

Kids dad lost visitation rights through cps wont sign over rights and bullying my children causing us to move.

Assuming you and your kids live in FL you can file a petition to terminate his rights in FL.

Contact the sheriff office (not the clerk) find out what the purge amount of the warrant is, pay it, then file a petition to modify support.