So I finally want to record in my living room. All I have so far, besides the instruments, is a Line 6 Helix LT. My first question would be: Do I need an additional USB Interface? I'm thinking about ordering a Focusrite Scarlett Solo 3rd Gen, but I do I really need it? I'm planning on recording Guitar (only electric so far), Bass and maybe my E-Drum Kit. Later, if I found a singer or learn to sing my self, I'd record vocals as well, but this is going to happen later. Apart from that, is there anything else I need? Besides a recording Software oc.