Help with wiring...

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Hey peeps... Let me start by saying sorry, as I know there are a lot of threads out there regarding heater wiring, and I have been using search function and have the diagrams, but I still a little confused.

Can someone help me by explaining what relays I need to use, and ones I dont, and How I should go about wiring the ones I need together? I have 72 stepside with Ac but do not want ac to work, just heat. I have ordered most new relays and connectors, but I am not sure how to wire them all together!

Like the compressor switch on the back of the heater tube box, do I even need that if im not hooking up ac? the resistor that is inside the box and close to the heater core, how do I wire that, cause I cannot find a connector for it on LMC.
I have ordered the a/c blower relay and connector, as well as the fan controller wire connector. Anyone that can guide me in the right direction, I will appreciate!