Disc brakes/lowering spindles and coils, and front suspension overhaul

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Hello, I am in the middle of shortening my 1970 chevy c10 (which will eventually get a 5.3L v8 truck engine), and since everything is taken apart I would like to lower it and do a disc brake conversion. So far from my research I have determined that I would like to use 2.5 inch drop spindles and stock springs to lower the front, and 4 inch drop springs to lower the rear. I would like to convert the front and possibly the rear to disc brakes. I plan on keeping the upper and lower control arms but would like to overhaul the rest of the front suspension as well. This truck is meant to be a weekend cruiser that is capable of towing a light-medium fishing boat and a hockey bag in the bed.

My budget for now is $1500 USD (I live in canada so about $2000) but I would like to buy everything on sale to save some money (I dont have a time limit to complete this by so I can wait until christmas/boxing day sales). I have looked around and found some decent lowering spindles and springs that would run me $500 USD, but haven't really looked at disc conversion kits or front suspension parts.

So my questions are: Can a lowering, front suspension overhaul and front/rear disc brake conversion be done on this budget? If so, what parts/brands do you recommend I look at? Any help is appreciated!