Hi Ben,
Yes that would work.
I know I have seen a thread on this forum, where a box was made with beveled joints by the use of a 90 degree V-bit but I can’t seem to find it again.
This is also a nice approach.
https://community.carbide3d.com/t/overengineered-box-for-the-endmills-i-dont-have-yet/429
Keep us posted 