Welcome KE.
The Ibanez necks are lovely for an affordable bass aren't they? I've got one myself, the SR605, much the same as yours except for the finish I think.
Songs for fivers... I couldn't find a lot but then I only do TAB and then only when it suits me.
I found it isn't difficult to find ways of rattling the bowels of most songs with the five. What you might find useful is the reduction in travel along the neck for any given scale. Because of the extra string you can find a more economical use of the fretboard and get fingering arrangements to suit your speed, so to speak.