Build yourself commuter wheels right now. They are a good project for a first time builder as you are more likely to use round spokes than bladed and higher spoke count wheels can be easier to true. The parts can be cheaper, too.

For $200 you can probably find Sun CR18 rims, shimano 105 hubs (assuming a 130mm rear) and Wheelsmith DB 14 spokes with brass nipples. You will end up with a great set of commuter wheels that will be durable and easy to repair if they need it.

You will also gain invaluable experience on wheelbuilding that you will want if you go on building road wheels with more expensive parts.