Welcome to the forums. For a start you need at least 20A ESCs to run this. This is because your motors are 14amp and you need at least 5A of leeway. Unless you want to solder direct you will want to get some bullet connectors (at least 12 and they usually come in packs of 10) . To make connections easier you'll want a power distribution board or cable, with a compatible battery connector (deans, XT60, EC3).