I wouldnt recommend dosing full EI, it only works in certain circumstances.
If you going "low light" and 'Low growth" then you wont need much ferts at all. If you have a high fish load, then N and P might not be needed, so trace would be a safe bet for you.
If you are aiming to grow swords etc, then you could get away with just dosing the substrate with fetilisers via tab form. Many crypts are better looking than Echinodorus and there are some lovely aponogetons that will give you plenty of plant mass. Most of the plants you say you wish for will be predominantly root feeders, so bear that in mind.
Cheers.