It's a very versatile tank that can accommodate lots of wire types. You can stay with thinner gauge wire from 28 gauge and 26 gauge that will work fine and are easy to work with. If your a beginner they are good gauges to have to mess around with and are useful throughout your vaping journey.
If you want more wire to experiment with as a beginner it can see a little daunting with various TC wire if you have a mod that has that function. I would add 28 gauge NI200 to test the waters and possibly some 316 ss 26 gauge but you can get to these later on.
So 26 and 28 are great starting wires I think with that rta.