Well, I was and remain a Nervous Nelly with regard to the process. I was exhausted yesterday and truly having difficulty comprehending what I was reading here and on other forums and how these experiences and suggestions could relate to my individual circumstance.
So I reached out via PM for some hand holding and hope I started the process last night that will work for me after hearing from one person.
I was told to simply order an S5 from Best Buy online using the eligibility for my primary line which has UDP and an S3. Then when I receive it go through the process described here and elsewhere to toss the new SIM and use the S3 SIM.
It was also suggested that I transfer my eligibilty from my other UDP with an S3 on it also to my primary line and order another S5 that will go through the same process but on my daughters secondary line with UDP.
That still leaves me with two DUMB lines with eligibilty.
Does this sound correct to you all?
Once again, thanks to all who assist and sorry for the request for some hand-holding but I wanted to make sure I was doing it right and not make a mistake...