Simple? Easy?
You can answer most of those questions. As mentioned, and the biggest question is does the lock have a fly? It needs one.
Next, will double triggers fit in the TG bow? If not, you'll need to use a single set trigger, or, use a new trigger guard that will fit two triggers.
As mentioned, will the tang bolt clear the triggers. It should, and a look at its location will answer that question.
You'd need to remove a bit of wood for double trigger setup, but that's no big deal.
Probably the biggest issue would be the relationship between the sear bar on the lock and the trigger bar to trip it.
If the lock and trigger are common purchased parts, a new trigger set can most likely be made to work by adjusting the trigger bar/sear fit.
If you do the work yourself, it's the cost of the new parts.
If you have someone else do it, its the cost of the new parts, and say $250/300-ish in labor.
John