If it's a true mandola you may having difficulty tuning it GDAE (actually octave mandolin tuning) as the neck will be a bit short, so the strings will sound very slack and the intonation will be terrible.

It it's what our American cousins have decided to call an octave mandola (technically a mandocello) i.e. built to be strung one octave below the mandola, you should be able to do so easily, but you should at least consider calling it an octave mandolin - as that is what it will be. (If you try to tune it GDAE at the same pitch as a mandolin it will become some bits of wood).

You do sometimes hear people calling mandolas (i.e. tuned CDGA at viola pitch) 'tenor mandolas.' Actually the mandola (from mandora, meaning almond-shaped) is the senior member of both the 'mandolin' (which means 'little mandola') and violin (which it pre-dates) families - so the word should never need to be qualified by any descriptor other than those used to define the other mando-family members.

In fact the word 'tenor' is most often used also to denote an octave drop - as in tenor banjo and tenor guitar, so 'tenor mandola' would, if used, mean the same thing as 'octave mandola' (if such a thing existed) - correcty a mandocello. You could call an 'octave mandolin' a 'tenor mandolin' if you so chose, but people usually don't.

Typical string sizes for a mandola are 12 20 30 42

Tom

Oh and the bouzouki is not Greek but Turkish - and the word bouzouki means (I'm told by my chum Louis de Bernieres, though he may be winding me up for my pedantry) 'a mistake' or 'a thing badly done' in Turkish.

More of this nonsense here