Holley Sniper +12v crank&run wiring

[Skdmark]

I'm planning out the electrical install of the Holley Sniper for my '71 Barracuda and have some electrical questions.

Hardware
Engine and trans 318 w/904 and AC
Edelbrock LD4B intake
Sniper 550-516 (4150 4bbl)
Hyperspark distributor
Hyperspark canister coil on a 340-6 coil bracket
Holley Coil driver module (Not the CD box)
Holley OE Style EFI in-tank fuel module
Inertia switch
Tuff Stuff 100 AMP OEM Wire Double Groove Pulley Factory Cast PLUS+ 8509DP
Ammeter bypass setup from crackedback

I have 3 pink wires (7-pin ECU, Distributor, Coil Driver) to attach to a +12v Ignition source that is live for run and crank. I would like to put connectors on each of the 3 pink wires so I can easily remove/replace the components without having their respective harnesses hardwired in.

Questions
I plan on gutting a ballast resistor and soldering in a piece of 12 AWG wire across the two spade terminals. Resistor in appearance only.
Once I do this I should now have a constant +12v line in both run and crank at the blue wire w/tracer, correct?

The blue wire w/tracer goes to the number 1 splice and out to the Alternator, Voltage Regulator and bulkhead connector.
It looks like 318's and 340's share the same basic engine harness. Could I install a 71 E-body 340 Idle Solenoid Harness and use the carburetor solenoid line to feed the 3 pink wires?

Then, I could install a 1 to 3 molded bullet adapter on the idle solenoid harness and plug in each of the 3 pink wires.

Down the road, once it's up and running, I plan on either re-wrapping the Holley harness in the OEM black vinyl or just building my own main harness. This is so I can adjust where the in-line fuse and fuel pump relay is located in order to make them more discrete.

[Chryco Psycho]

 True if you run a jumper inside the ballast you will have full 12/ 13v switched all the time .
Idle solenoid wiring can be used for 13v switched
The Tri plug is a good idea 

[Skdmark]

True if you run a jumper inside the ballast you will have full 12/ 13v switched all the time .
Idle solenoid wiring can be used for 13v switched
The Tri plug is a good idea 

Thanks for confirming. I appreciate it.
I've reached out to Tommy White at Parts Hound to get a loose 3-way accessory lead from a mopar dash harness. I will use that instead of the 3 to 1 bullet adapter pictured in my previous post (used in Shelby Mustangs).

[Skdmark]

Just got off the phone with Tommy, he's just going to make me the harness using the concept I laid out from scratch.
Fortunately I live about 45 minutes from him so I can go pick it up. I'll have the scratch built harness in about 48 hours.