Don't know about most of your question but the Standard Deduction for 2025 for Single is only 15,750 not 15,963.
The 2025 Standard Deduction for an individual for whom an exemption can be claimed on another person's tax return is limited to the greater of:
…..the minimum of $1,350 or
…..Your earned income for the year + $450 (but not more than 15,750)
So you would get a minimum of $1,350 to a max of 15,750.
