Help me pick a few parts

[czgunner]

Hey all.
I've got a SIG GSR X-O SS 1911.
I want to replace what looks like some cast parts.
The thumb safety and slide stop for now.
I need a good low profile single sided stainless thumb safety.
I want a similar slide stop.
I'm trying to slowly build this into a dead nuts reliable hard use pistol, so if there is anything else I should be considering, please let me know.
Please help!
Thanks!