From what I've seen across many businesses looking to scale, you hire sales reps and train them on how to sell. They're not expected to innovate. More sales reps = more selling power.

You hire marketers to innovate. They're expected to be able to ideate and iterate quickly and bring new tactics to the table. Smarter marketers = more marketing power.

From what I've heard, it's much harder to find a really good marketer who knows how to grow awareness of your business, create and execute a strong lead generation strategy, successfully nurture these leads to be sales-ready, and measure and optimize every piece of the funnel, than it is to find someone who you can teach how to sell your product.

I'm not saying sales is easy. But I've never seen a company really struggle to find the right sales rep to hire. If you're going for long-term value, I'd go for marketing.