From a value standpoint, I like the trade. However, this trade would require a fair bit of follow up work.
Losing Miggy would leave you with Smoak at 1B. He's not a bad option, but far from Miggy in production and track record.
You would have two SS, Reyes and Tulo. One does SB's and one does HR's. As both are useful, your UTIL spot becomes permanently locked when both of them play.
Choo should be an upgrade over Brown in the long run, although Brown is an unknown as far as how his season will pan out.
Since it looks like you're already using smoak in your Util slot, you would be switching Miggy for Tulo in production. I think that's a downgrade, although not a huge one. You would benefit with Choo everyday in your OF as well.
So, really it's not a terrible trade, but it doesn't actually help you. You just kind of move things around, and your flexibility takes a hit as well. I would not do this trade if I were you.Help on mine?
If you want to take a stab, go for it.
Welcome to the Cafe as well!