If you don't need it yourself, and you're building something that someone else needs, realize you're at a big disadvantage.
In general, it's best if you're building something that you yourself need.
As the company grows and about this 25 or so employee size, your main job shifts from building a great product to building a great company.
Be suspicious of any work that is not building product or getting customers.
Be suspicious of any work that is not building product or getting customers. It's easy to get sucked into an infrastructure rewrite death spiral.