Spanish forces and defensive attributes we can see:
Barcelona - 2 archers; grassland; 40% defense.
Toledo - axe (combat1), spear (com1), archer; hills; 20%
Madrid - sword (com1), sword, axe (com1), spear(com1); grass; 60%
Seville - axe, archer; plains; 40%
Santiago - ?; plains; ?
there are also a spear visiting Arkadia, 2 swords (com1) and an axe (com2) outside cities
Our forces:
7 archers(MP), 4 horse archers, 3 war elephants, 2 warriors (MP), 3 axemen, and 3 catapults
Under production: 3 war elephants, 1 catapult which will collectively finish in 4 or fewer turns. A further 2 units can be ready by the 6th turn, and 2 more by the 9th turn.
My personal preference is to launch a war when 6 catapults are ready and in place. I'm probably a little bit too conservative.
On the defensive side, Arkadia could use another archer, or we can try to preemptively attack incoming swordsmen with axemen when they're on exposed ground.
Net: an immediate attack on Barcelona is possible, if a little risky. At a minimum we'll get a worker out of it. They also have a settler holed up there.
One slight problem, upon DOW the spearman visiting in Arkadia could land on the jungle tile being chopped right now, and he'd be pretty hard to dislodge from that spot. If we're lucky he'll land on the grass SW of Arkadia, which isn't even across a river, in which case we can DOW, kill the spear with an axe, then capture the worker and place catapults there for bombard next turn. Or we could wait till the Spanish chop finishes and deny them the possible safe landing zone for that spear.
It's not really a full plan, but better than nothing. Any comments?