Summer Tweed

I need some advice. A while ago I ordered the elusive Terrazzo jacket as a birthday present from my parents (sorry, I am Italian and I can't push myself to replicate the typo in the name of this jacket. If you look for it on the website you should type "Terrazo" or it won't come up). I had tried it months ago in store and loved it but since I have my share of tweed jackets and needed this one like a bullet in my head I decided that I would wait for it to go on sale. The thing still hadn't gone on sale at the beginning of July so I used my parents money to order it to at least see if I still liked it, since it was long gone from the stores. I ordered the same size that I had tried on, a 0, because I remembered thinking that it was perfect, even if usually I am more of a 2 in blazers and coats.
The jacket arrived and I am a little bit on the fence about it. Maybe it is because I can't see myself wearing it with anything else than jeans, maybe it is because I have too many tweed jackets already that I don't wear that much and maybe it is because it fits a tad smaller than I remember it fitting. I couldn't reorder it in a size 2 just to see if it had a better fit because in the meanwhile it went on sale and final sale kicked in. It did pop back the first day of the 40% off in a size 2 for $199, so it would have been a very good deal and I almost ordered it but since I wasn't 100% sure I didn't want to be stuck with it.
This is one of the fitting room pics back in March. I am sure that I tried a 0 because I was trying it for a friend. As you can see, I could button it easily and it doesn't look small in the shoulders:

And here it is the 0 that ordered:

I don't know if I am biased by the fact that it does feel a bit small in the shoulders and I can't recall if the one that I tried on did (who knows, maybe it did and I forgot), does it look smaller in these pics to you?
I do think that it is a very modern take on the classic Chanel tweed jacket. The chain trim gives it a twist and unlike the ugly exposed zippers on other similar jackets I don't think that it will look dated anytime soon. I also like that it is a v-neck style instead of a crewneck.
Look, I love the chain trim so much that I even found a chain belt at Intermix to wear with it:

In any case I wanted to try it with other things than jeans, even if to me this is a jeans jacket. I tried it with my navy Mila mini and my ruffled Zara blouse:

As an aggravating factor in my decision, the other day I got to try the neon tweed jacket, that just went on sale as well and could be an alternative. This one is really a summer jacket because of the short-sleeves and it is also a lighter tweed than the Terrazzo, which is more suited for spring. I always admired this jacket but could never find it in store. This is a 0 as well:

The short-sleeves are adorable but could be a very bad idea for our weather. I think it would look great over a little black dress but then I also think that if I need a topper I probably need a long-sleeved one. It also seems to be less my style if styled differently than in these pics (I really don't need a jacket to wear with cropped white jeans) than the Terrazzo.

So here is my dilemma: should I keep the Terrazzo in a 0, try to catch a 2 on super-duper final sale and pray that it would fit or just return and forget about it? Any advice is appreciated, I value your opinion!