Hello Woko Haram,
Sounds good to me. I don't see any need to administer nearly as many social assistance programs if we simply began a UBI. It would replace the need for much of that, and it would free those workers from the need to work. They themselves could go on the UBI, or, if they choose, they could try to find work elsewhere for even more income. The UBI should be enough to live comfortably. Some assistance programs such as extra needs therapy and other medical and mental will require extra social assistance funding, so there will still be a need for some social workers to determine eligibility for those programs. Simple food and bills assistance programs can vanish, along with all the bureaucrats who run them, and the overhead costs associated with administering them. This will also free up large amounts of funding which can be applied to the UBI program.
I think we disagree on the details. It should NOT be enough to live comfortably. It should only be enough to barely live off of, so that people would continue to seek out work. The amount dispersed should also be smaller the younger a child is. So, you'd have a minimum amount given per infant, a higher amount given for elementary kids, slightly higher than that for middle school kids, slightly higher than that for high school kids, and then the peak amount after reaching adulthood.
Having a system like this would limit people from having kids just to have more funds, and it would encourage people to work.