Drops dont really work on mtb's, better with a purpose built 26" wheeled tourer like a Thorn Sherpa or a Dawes Sardar. If you do go ahead, Kaiser comment on the drops is valid, moustache bars are good as well.
I'd say build up as a mtb as it was intended.
Also I'd say STOP buying bikes you dont need Gazz and I say this as a person who is reducing my collection because this madness has got to be controlled.............WOOOHAHAHAHAHAAAAAAAAA !!!!