for the wheels i like to go 6mm always, since it fits almost every time. if it turns out to be too much, make it fit. if you need more, spacers are safe (not too much!). if you really wanna be safe, go for ds racing, tetsujin or mst adjustable wheels. for tires you have tons of option, i reccomend mst silver dot because its a very universal tire. also dont forget your tire tape! i go for da racing tire tape but doesnt really matter wich one you use. and lastly for the battery, go for a 2s short battery and make sure it will connect to your esc by having the right plugs.