The cheaper option is absolutely bottom of the barrel components. It will work but is the equivalent of what you'd find on the cheapest squier sold at your big box store of choice.

The second option is using Stew Mac's Golden age pickups which sound pretty good, and the electronic components (pots, switch, capacitors, etc.) are the best you can find with out hunting down really expensive "boutique" examples. So yes, pretty similar to what you would find in an entry level american fender guitar.

Another thought, depending on how much cost is a factor. Dedicated pickup maker's often sell pre-loaded pickguards as well. Then you'd be looking at quality comparable to a much higher quality guitar. I just looked up pre-loaded pickguards on Lindy Fralin's website, and they start at $345 USD and you have a lot more control over the options.

https://www.fralinpickups.com/product/c ... pickguard/

If this build for you is just putting your toes in the water to see what it's like, then I'd likely go the cheaper route. But if you're hoping to end up with a guitar you love to play, for the extra money I'd say getting the best electronic components possible will ensure you're happiest with the outcome. To me, the most important consideration for an electric guitar is the way it sounds plugged in. So pickups make a BIG difference.

A last thought and its a small one, in case you're using templates/measurements taken from an actual Fender I wouldn't drill the screw holes for the pickguard until you've got it in your hands, aftermarket pickguards don't often line up with Fender's factory holes.