A couple of suggestions. First, don't get the atr2100 mics. You're paying for a USB interface you won't use. Pick up a couple of Shure SM58 mics - even if you upgrade later you'll have them as good quality spares. They cost a little more but they're a little better quality.

Get the Zoom H5. It's about $270 and had actual gain knobs (no digging through menus) and supports Zoom's interchangeable mic capsules. It can also act as an audio interface.

That'll leave you around $130 to pick up an inexpensive set of headphones, a couple of mic stands, and cords. You'll have a setup that will work well as a portable setup as well as an in-studio rig and will be useful later on if/when you decide to upgrade work a mixer or dedicated audio interface.