Keeping Paraphidippus basalis [AZ]

There are dozens of these little guys outside my house, I see them crawling on every fence, under every leaf or rock and they're really cool. But they're super small, like smaller then a grain of rice and I'm kinda iffy about keeping a fruit fly culture for a single or maybe even a few tiny jumping spiders. How long would they take to get big enough to take small crickets or something similar

Does anyone have experience keeping them here?