The Akathist tone is quite common..
if you use one Akathist tone, it can be used for all of them.
Yes, typically they follow the same pattern as the one for the Theotokos that is done during Lent... but there can be variation... I know there is (in Greek) a book with just Akathists, but I haven't seen it anywhere other than here at school... I figure there has to be something out there on the 'net with another Akathist to help...
"O Cross of Christ, all-holy, thrice-blessed, and life-giving, instrument of the mystical rites of Zion, the holy Altar for the service of our Great Archpriest, the blessing - the weapon - the strength of priests, our pride, our consolation, the light in our hearts, our mind, and our steps"
Met. Meletios of Nikopolis & Preveza, from his ordination.