1. Get proper eye protection ASAP, ESS products (with full eye seal preferably goggles) would fit the bill nicely for about 100$ for three pairs. Paintball masks can also do in a pinch.
2. If you are going to play out of a sanctionned field, consider keeping your guns transparent.
3. Since you travel, don't be tempted into buying guns abroad. Attempting to cross the border with one on your person or having it delivered to your home might land you in legal issues.
4. AV is worth it, there are deals in the 100$ to 300$ braket, just not "real" full metal guns. Most of them will have some or all components clear, others might be used. Still worth looking into imho.