Button stance seems fine (and this is coming from someone who likes his high). Tucking in the pockets will help, and you wear it enough (4-5 times) you'll stop seeing self conscious about it. Ultimately, it's linen, so you can be a bit more flexible about how you wear it. It's not going to be your go to suit anyway, so don't worry about burning it.
Appreciate that; hoping to look past it eventually. A costly but important mistake, much like some past relationships