I have a number of regular fish lines...but is there a "heavy duty"
fish line for this type of work ?

Any other pointers...tips....will be really appreciated !

Thanks, Tim

Robert Barr wrote:
If it's possible, lay out the cables and assemble the conduit over the
bundle, piece by piece.


That is a specifically forbidden practice in the US NEC. Attempting to
install raceway over the conductors inevitably leads to insulation damage.
--
Tom Horne

"This alternating current stuff is just a fad. It is much too dangerous
for general use." Thomas Alva Edison

300.18 Raceway Installations.
(A) Complete Runs. Raceways, other than busways or exposed raceways
having hinged or removable covers, shall be installed complete between
outlet, junction, or splicing points prior to the installation of
conductors. Where required to facilitate the installation of utilization
equipment, the raceway shall be permitted to be initially installed
without a terminating connection at the equipment. Prewired raceway
assemblies shall be permitted only where specifically permitted in this
Code for the applicable wiring method.