Question: Editing Trainer Names in HGSS

[TrainerArenok]

Hello everyone.  :)

So, I'm fairly new still to the idea of ROM editing and tried asking around on reddit for an answer to my current predicament.  So, I wanna do a HeartGold Nuzlocke series after a failed FireRed Nuzlocke that ended in, well... the death of my team (and story-wise for a laugh my trainer).  I wanted to change the teams of both Blue and Red to be similar (with adjustments) to both Blue's team from FireRed with some changes to suit my brother's personality (named it after his name on Twitch) and Red's team to be the "dream team that could have been", which I was able to accomplish using PPRE.  I also wanted to change the name of Blue and Red to my original trainer's name and his rival's name from FR, but with PPRE that doesn't seem possible - or at least with the version I have.  

Is there a way to find an older version or another program that lets me change trainer names available?  Or is there another way to safely edit the names of trainers?  Also, if, by some chance, there's a way to give a trainer's Pokemon nicknames without changing all instances of a Pokemon's name to said nickname, how could I do that - or would that require creating a separate, unobtainable version of the respective Pokemon?  

Thank you for your time.

[Delta Blast Burn]

I’m pretty sure all trainer names are stored along with the story tex (I believe a002) but in a diferent sub file just open it with pptxt and it should be pretty easy to spot (one trainer name per line) @Kaphotics correct me if i’m wrong