Unless performance is a key component to your service, I would focus on launching and marketing. Being an engineer, I've often fallen into the trap that a product has to be technically perfect before launching. Being a freelancer and indie developer, I've gotten to meet other freelancers and founders, and got to work for agencies and startups.

There's so many products that are technically crap, but they provide value to some people. Thus people are willing to pay for it.

There was one startup guy, who outsourced development to this one guy in Asia. I thought "this product will not last long, if that's the way development is done". He went on to get funding from an investment arm of a big company within the sector. I thought, "ok, this will be as big as it gets". A year later he's got a deal with a major national retailer.

This is one of the reasons I focus on providing value, not a technically perfect product.