Producers behind the new musical about the rise and fall of a fictional music-industry superstar, “The Man,” are laying the groundwork for a big-budget spectacle with an estimated $35 million pricetag and a trajectory that takes the show from Vegas to the road to, if all goes well, Broadway.A quartet of music-world types who played roles in managing the career of Michael Jackson aim to launch the title, a backstager seen from the viewpoint of a star’s manager, in Las Vegas this fall or in spring 2014, according to producer Mark Lamica. Lamica was a former business partner of the late Frank Dileo, who was Jackson’s manager. Lamica co-created “The Man” and produces with Quincy Krashna, another partner of Dileo’s; Jerry Greenberg, former prexy of the record label Jackson jointly owned with Sony Music; and Larry Hart, creator of “Sisterella,” the 1996 tuner that Jackson exec produced. Lamica said he’s working on pulling together a score made up of original tunes by a roster of big-names artists he knows from his years in the music business. Proposed timeline would see the show play one of the big casino venues in Vegas for six months or a year before a second production would hit the road on a national tour. If all goes according to plan, the tuner would look to move on to Broadway at some point after that, Lamica added. Show is described as a “dram-ical,” a music-driven show in which the title character does not sing. Most of the tunes would be sung by the performer playing the superstar whose up-and-down career the storyline follows. Casting and a detailed production plan remain to be set.