Ill try and address your comment/questions in order.

I am in the process of setting up my trainer. It is not a smart trainer so no electronics.
This can be done but at a minimum you will require a Power Meter.
What you will be missing is the Smart Trainer function that controls resistance.
This varying resistance is how the Smart Trainer simulates hills.

I am looking at speed and cadence sensors.
A speed sensor serves no purpose indoors.
A cadence sensor may not be required. If the Power Meter is in the Crank Arms or Pedals, it likely also measures cadence.

I am also looking at the Wahoo "free" version app. I am not sure if I should use a laptop or a led tv for viewing.
Most Power Meters will output Bluetooth. You will need a suitable software application and a Bluetooth enabled hardware device to run your chosen software on (example Zwift).
Personally I use an Apple TV as the device, it's connected to my TV for viewing. Bluetooth is built into the Apple TV.

My laptop is not setup for bluetooth and I don;t have a smart tv.
No Bluetooth, no data. The Apple TV device is a lot cheaper and more powerful than an older laptop.

evening out my power between my left and right pedals. building measurable power and strength
Not only will you require a Power Meter, you will require a Dual Sided Power Meter.
Single Sided Power Meters measure one leg and double the measurement.
Dual sided Power Meters actually measure each leg independently.

NOTE: Hub based Power Meters measure both legs at the same time and can't tell which leg is actually doing the work.
A Smart Trainer is basically the equivalent of a Hub Power Meter, so you can’t see the data of each leg separately.

I hope this helps.

Barry