The mods sound good but the Turks might be too strong as might the English.

I'd say that you shoudl make sure the troops aren't given to those factions for free.

giving the Aragonese El Cid early with the jinettes might make them quite capable of wping out the Spanish.

giving the Turks Byz inf also doesn't make sense.

if you're gonna give the English a ship in the Channel, why not remove the landbridge from Wessex to Flanders?

Poland is alreayd quite viable and otherwise they'd get Moldavia too quickly.