I think Seattle would pick the "now with Felix" option. There's lots of pressure on them to win something right now. Most kids are up anyway with Seager, Ackley, Montero, and even Smoak all still having some impact ML upside.
They'll buy Felix in FA if he hits, but I think the trade guy is Price if/when that situation plays out. Theo has tried to trade for Felix once, which was heavily reported despite almost everyone getting in on that.