Just skip all the foreplay and build a custom stick!
I’m totally joking (or am I?). If it was me, I’d wait for the TE restock if you enjoy playing fighting games in general and can see yourself doing it for a good while. It’ll be a little more expensive than a retail SE + parts, but you’ll get a much sweeter case.
If you’re going to be playing fighting games long haul, the thing to realize is that no matter what brand buttons/joystick you use, you will wear them out. The switches used are only rated out to operate for so many cycles. If you have a custom case, the TE, or one of the other easily modifiable cases out there, you can do all the repairs yourself no problem and for surprisingly cheap. When a new system comes out, it’s a bit trickier operation, but you have the option of making your trusty stick compatible for far less than the cost of buying a whole new one.
A good stick can be relatively future-proof and last a really long time if you take care of it. Just some things to think about.