I think I'm okay for items. Like you say, the Route 13 guy has a lot of them if I'm feeling patient. I'm not sure which others I need, lol.
I'm looking for Piplup, Chimchar, Treecko, Torchic, and Mudkip or any of their evolutions. I'll probably breed them out for natures and IVs with my dittos anyway, so I'm not worried about gender. :)
As a favour, can you PM me instead of VM? I get email notifications for PMs and I can't figure out how to get them for VMs. Otherwise I might miss you :D