Caregiver; I may be wrong, but it seems as though you will be funding your own annual expenses, exclusive of the portion needed to cover your sister's financial needs, through your parent's rental income. Is that correct? If so that could be a dangerous move. Viewing your parent's assets as even partially supporting your needs would be a problem with Medicaid look back rules. Any money siphoned off for you and perhaps even your sister would be clawed back as I understand it when their money runs out and you or a nursing home place them on state aid. You state that their long term care needs are covered. How so? Actual policies? For both? How big is the benefit? Nursing homes/ memory care units easily cost $80,000/yr. As others have said the likelihood that none of the three individuals will need institutional care is very low, a fact that you seem to be in denial about. Sorry to say this. I also don't understand how you can provide 24/7 care for your sister for $20,000/year. This may seem indelicate but it seems as though you plan to take over their assets and then parse out the money as needed to care for all three individuals and yourself.
+1 perhaps it's your writing style, but I am completely confused as to the source of of your individual support.
I think you very much have a bias to quitting work and caretaking your family and aren't giving much thought to the words of caution posted on this thread.
I'm not sure what extra money your DS will need, if she becomes involved with a state provided care taker and you or your parents get a rent payment from the state for your own apartment, along with state provided medical care where is the cost of her upkeep?
You don't have clue as to what might be down the road for your parents. When my MIL had severe Alzheimer's she completely flipped her days and nights and didn't even sleep much during the day. When her family finally consented to the nursing home, you couldn't even leave her alone long enough to go drink a cup of coffee. Plus, IMO the earlier you can place someone, the better chance they have of some kind of positive adjustment to the new situation.
Walk down the street and ask 100 people if they want to die in their own home or a nursing home and I bet 99 or more will say my own home.
Not to bring up a morbid point but right now you appear to have no one in your life to return the favor if at some point you need caretaking. I believe that you a nowhere near financially ready to give up your job with your own funds.
A note as to trusts and 5 year look backs, It's no longer a rubber stamp, in this state anyway. If they feel your intent was to transfer assets to avoid care costs, they will pursue recouping the out of pocket or just won't pay the nursing home bills in the first place.
Your last post seemed to say, I heard what you all said and my parents don't want to end up in a care facility so I'm going to forge ahead.
I hope things end well for everybody, but asking someone if they want you to take care of them so they don't end up broke in a nursing home being taken care of by strangers, is kind of a loaded question.
All the best, you have a difficult family situation and I applaud your kind heart. I in no way think that money or personal gain enters into the equation with you and think you want to get in and help and fix things, but sometimes things are not fixable by one person.