Some issues with the Spanish side is that nobody makes (in 40mm) , Grenadiers, Cavalry, firing/skirmishing Infantry, Infantry in civilian dress, Artillery.

So quite a task to recreate.

The solution is to create a representative selection of regiments. 1st Division (Cagigal) looks the most promising, there is a mix of 1802 and 1805 uniforms, Light Infantry (Barbastro), Infantry in British uniforms(Buenos Aires), but with the clear issue of the Grenadiers and Artillery figures.