Hope I have something to add here.
(All in my opinion...)
Baguette rings are a challenge to be sure. But doable.
First, the math.
You've got to have it all to start, seems logical, but without the stones in hand you'll likely have unseen issues.
Silver is a poor choice for a baguette ring, unless the caveat "wear with care" i in place.
It just doesn't have the structural integrity needed when supporting thin elongated stones.
As to stones, I highly recommend Shanu gems in NY. Pramod, the owner, has been an AGTA board member and has a deep relationship with the big "T" company with blue boxes...
His stones are color and dimensionally accurate and prices are very reasonable..
As a teaching tool, doing a baguette ring is a great feat to accomplish.
As an income earner... in silver.. not so hot for a first project.
I'm enclosing a link (or maybe the video will pop up, still figuring the site mechanics out..)
I wish you well, and am glad you put your design queries out to your community.
The ring below is platinum, and a real challenge , but, all the principals apply.