At this juncture, you may want to evaluate whether to convert to carbs or not to convert. You have a '74 model and that probably predates emissions inspections in your state. If that is the case, you won't have that to worry about based on your decision. I realize that this may sound oversimplifying at this time, but the spiders aren't that complicated and this is a challenge that you can overcome.
You need to get the pump qualified, and Ingram can do that or afix repairs. Honestly, at this point, I would be more tempted to convert, as I have done that succesfully once and quite enjoyed the car afterwards. However, it is most imperative that before any additional money is spent, that you can become confident in the scope of expenditure.
A source list including some old-time alfa used parts outlets follows:
As I recall, I bought my conversion parts from Alfa Heaven. Ereminas Imports has been around a long time. The outfit that sells you a conversion kit must be able to advise you during the installation, or you risk having purchased from a source that doesn't understand the conversion to begin with. They should be able to take you all the way through tuning your Dell'Ortos or Webers.
Whatever route you choose, I suggest first learning everything possible about the injection or carburation system, to the point that once you start the work, its feels like repetition. The information for either system is widely available now. Best of luck....
P.S. If you are doing most of the work and your son is waiting on you to finish, then from experience I suggest keeping the Alfa for yourself and buying your son a Honda. Let's face it...this Alfa is a hobby for whoever will be driving it.