Hi joesh. Post the link to your proposed rack here, so everyone can see it.
Links is definitely one of the handiest modules I own. It was one of the first I purchased, and has survived in my case ever since. As far as LFOs, the DivKid Ochd is popular for a reason, and the same with Maths. Maths can do a bit of everything, and while it's not immediately intuitive it is worth purchasing a well-cared-for used one (or waiting for a new one). PNW is also one of the most important modules in my rack.
I am a fan of the 3xMIA, but I recently discovered the Warm Star Electronics The Bends cv controlled matrix mixer, and would HIGHLY recommend checking it out over the 3xMIA. It can do similar things and more, but with cv control (which the 3xMIA doesn't have). Very cool module and excellent price to hp ratio. A quad or hex VCA should also be one of your earliest investments.
I'm sure others will have some recommendations when we see your rack, but it sounds like you are headed in the right direction with your initial module choices.
Have fun and good luck!