1976 Chevy C10 Silverado Step-Side

[ChrisRB]

Hey everyone, I'm 16 years old and just recently purchased my first vehicle. The journey to this point was both stressful and exciting, however now that I have my first truck I'm left with no experience what so ever and I believe you all could be of great help. The truck is as you can see is 1976 Chevy C10 Silverado Step-Side running with a Big Block V8 454 and Turbo 400 Transmission. She is an original California Truck with no rust and a clean title. She has all the bells and whistles as far as I know such as Power Steering, Cruise Control, Tilt Steering, ect. Unfortunately on the drive home from buying the truck the camshaft pulley decided to break off and flew into the new radiator the owner had recently installed so I had it tow it home which only added to my areas of concern. Thankfully the engine did not seize. My initial thoughts were to keep everything as original as possible however I'm open to suggestions.

My Areas of Concern Mechanically:

Air Conditioning does not work. (Fix Original? Or Replace with New System?)
Radiator broken. (Does it need 4-core? 3-core? Or?)
Exhaust leak. (Unsure if manifold or muffler?)
Camshaft pulley gone on freeway. (Obviously need new one, should I also replace harmonic balancer?)
Battery bracket nonexistent. (Currently jimmy-rigged to sit in engine bay.)
Dash gauges mostly not functioning. (Gas works, RPM works, speedometer not working, and shift indicator not working.)

My Areas of Concern Cosmetically:

Broken sliding rear window. (Replace pane or full window?)
Small chip in windshield.
Door windows are squeaky.
Door quarter windows don't rotate well.
Window and door weather stripping dry and brittle.
Few small dings on body.
Two dents on rear fender. (Replace fender? Or have hammered out?
Side mirrors loose and wont stay in position on freeway.
Wood in truck bed old and rotted.
Bench seats need new upholstery. (Eventually may want to replace with bench that has arm rest.)
Headliner drooping from ceiling but not torn.
Door panels aged and weathered.
Dash has cracks on passenger side. (Repair? Replace? Or cover?)
Corner exterior cab molding missing on passenger side.
Rims mildly rusted.
Tires over seven years old. (Replace?)
Engine bay obviously dirty, how can it be cleaned up?
Paint oxidized in some areas.

What I want do:

Now; Get the truck running and fix minor cosmetic things.

Eventually; As money becomes available I would like to fix the major cosmetic things such as replacing a lot of the interior to a more desirable themed color. I'd like to keep the truck the same color blue but swap out the interior for dark grey or white with chrome hub caps and white seaming on the inside of the wheels. I feel the white and chrome will accent the blue nicely.

Pictures:

Side View
Front View
Rear View
Tires
Interior
Engine Bay
Some Areas of Concern

Heavily appreciate you guys taking the time to read this far and any input I receive.