Mmmm...except...there's some things missing here: phantom power and impedence settings. Very important...
If you're planning to use a high-end condenser mic for your horn, this might prove to be a problem. A better idea would be to go with something like this: https://www.sweetwater.com/store/detail/MixingLink--eventide-mixing-link-preamp-and-fx-loop and then take the line out from this (or the AUX port) and go to a more conventional input preamp such as a Doepfer A-119 for your boost to synth level and the envelope follower/gate result. A box like this also allows for a separate FX loop besides the modular. As for modules WITH phantom power...ahh, you're utterly screwed unless you hold an AMEX Black Card, because then you're looking at Cwejman stuff, and that ain't cheap! Even at $300 for the Eventide box and $100 for the A-119, you're STILL a few hundred ahead of that.
However, if your horn has a piezo pickup (most wind pickups these days are), then you'll need a module that doesn't have phantom power, but a suitable hi-Z input setting so that the piezo sounds natural. In this case, no external box would be needed, but you'd want to look into something like Sputnik's EF/Preamp, which has the necessary impedence adjustments for this.
The Erica module IS NEAT, no doubt...but it's not out yet. These other solutions are, and they should work just fine.