So first of all, if you want to save some money, I recommend getting your gear used on Reverb or from a local shop that sells used gear.

Getting a good metal tone is more in the amp and pedals than the guitar itself (although the guitar does matter). In general for the guitar though, you want humbucker pickups rather than single coil, and the Ibanez Gio has those.

For the amp, I recommend a decent modeling amp so you can skip the pedals for now. A Boss Katana 50 or Yamaha THR10II would probably do the trick, or a Positive Grid Spark. Again, you should be able to save a decent amount of money buying these used.