Whats the best way to get the wires through this floor to the next wall section below ?


I had a similar problem and ended up routing between 3 floors through some closets.
The nice thing about cutting access holes in a closet is that the quality of the drywall repair is not critical and you needn't be too fussy
about matching paint colors.

What are your thoughts on installing a 1.25" plastic conduit to make it easier to pull/replace wires in the future ?


*Installing conduit is a good idea. However if you don't intend to open up the entire wall I suggest that you use flexible metal conduit (AKA Greenfield). It can be fished through the wall and your run doesn't need to be perfectly straight. Put connectors on each end with bushings to protect the wire from sharp edges. You can install a pull string for future wire pulls through it.

For stuff like this smurf tube is better (type ENT, the blue stuff at
HD) . It is a little stiffer than greenfield so you can push and aim
it easier and it is smoother inside.
You also cut it with a knife and you don't have those jagged ends.


*I didn't know that they made it in inch and a quarter.