I will now beat myself severely over the head with the Encore manual by way of expiation.
Those pdf's don't produce a very good flogging, but cyber punishment is all you deserve!
I have a lot of time invested in the artwork (which has to match print- and computer-screen products).
That would be one of the reasons to stick with what you have. Encore will transcode your menu to the proper settings, using the default project transcode setting. It will not downrez as well as photoshop, so if you have problems, scale the elements in photoshop.