Estate planning is usually described as the process of anticipating and arranging, during a person's life, for the management and disposal of that person's estate during the person's life and at and after death, while minimizing gift, estate, generation skipping transfer, and income tax.
Probate is the judicial process whereby a will is "proved" in a court of law and accepted as a valid public document that is the true last testament of the deceased, or whereby the estate is settled according to the laws of intestacy in the state of residence [or real property] of the deceased at time of death in the absence of a legal will.
A guardianship for an incapacitated senior will typically arise where someone determines that a senior has become unable to care for their own person and/or property.
I can help firm up your business plan in a way that will help you see your path more clearly.