Me too Ryan. I think I'm going to go that way.
I looked online for spline jigs because I've never made one. I was hoping to find some ideas for ones that have the angle adjustable for corners that aren't square but everything I saw had the included angle fixed at 90. Even the Woodpeckers one isn't adjustable for different angles. So I'll have to decide if I use something I have (I'm thinking my tenon jig will work), design/make one that's adjustable, or hand cut them. I'm leaning to just using my tenon jig on the table saw for the straight ones in the top and hand cutting the dovetails. It sure would be nice to just run it over a router bit and know they're all sized exactly the same though. And I already have DT router bits.