Sounds like a can of worms to me...
Before you go down the path, understand that you are going to use a flat tappet cam. Whether that be a solid lifter piece, or a hydraulic lifter version instead, a flat tappet cam has a critical break in period that occurs immediately after start up. Once the engine fires, it HAS to run for at least 20 minutes at RPM’s above 2500. That usually requires that you have everything dialed in close enough for the engine to be able to run at that rpm w/o getting hot.
Research flat tappet cam break in, and the required additive that you’ll need for the first start up, because something done wrong that causes a cam failure ultimately results in the entire engine needing to be redone, because the metal debris that comes off of the failing cam lobes and lifter(s) that are now eating themselves is also circulating back through the engine.
The way around that is to either use a known combination that you know will start and run from the jump, to know what you’re doing, and what to expect, or convert that engine to a retro-fit roller cam that won’t require a break in period.
You said it comes with everything, minus rods, but you intend bore the engine. You do not know it needs that until a machine shop tells you that it does. If it does, that will require a piston purchase. So now you are minus both rods, and pistons. Once you stick pistons and rods that are different than what originally came on the crank, you should consider having everything weight matched ( balanced). $$$$ it all starts snowballing from here.
All this goes to say that your recent purchase may end up costing you far more than you think. A first time engine rebuild should be done to an existing engine, or a complete engine at the very least. A newer 5.0 engine will be injected, it will have a roller cam that doesn’t have the break-in period hurdle, and you’ll have everything that came off the engine so that you won’t be hunting obscure brackets and pullies trying to make accessories fit.
A joy 5.0 is still out there although it’s getting more and more harder to find. My advice for you is to ditch the pieces parts, and find yourself a complete 5.0 running engine instead of what you currently have.