I am just figuring out patches. This looked weird to ones that I knew were period, it's just a lack of knowledge as to why it looks weird 

Patches or no patches, a stripped 1st-pattern JJ is super-pricey nowadays.     It is wild what they are bringing.

Why? To me it appears to be a well used post-1968 full color 1st Infantry Division SSI.

Check your PMs

Some of the officers jacket were padded, so that adds a layer.  Why not just use a 1 piece CIB? That would be more appropriate IMO.

Even trying this... (please don't judge me for what I've done)...

The back looks strange to me   

Thank you for your take on this :)) However, it seems, the seller changed his mind and wants more than 300 anyways now haha

Hello I have this two-piece Sterling CIB badge. I want to attach it to an officer's tailored cut-down jacket. The problem with WWII badges was that the posts were too short. It's completely impossible for me to attach the pins. I've started to spoil of the inside of the jacket at the first of the two holes and I don't want to continue.   How do you do it, or how did the soldiers do it on their uniforms?   Thanks and regards.

The last two 1st pattern jackets that I have seen sell at auction this year both went for over $500. If it is real, which it appears it is, that is a good price.