Welcome to the forum, Ben! Hmmm.... What else do you need for your tool kit? Here goes: mixing palatte, stirrer, lots of thinner, Putty, fine grit sandpaper, Xacto Knife (this is a must), tamiya masking tape (the brand i use), a compressor for your airbrush, future floor polish, and lots of household items: Acetone, Twistie-wire, electrical wire, "metal" instant cup noodle covers, and anything that you can make into something that ought to be on a plane!
Modeling is an expensive hobby,but you can still have fun with the essentials! Don't worry about having the right tools, you'll accumulate them over time. I'll see you around the aircraft forum, then!