I've seen pilot chutes in tow from burble traps on tracking suits with OEM bridles. Let me repeat that, I've seen it occur with tracking suits. Even a student wingsuit has a larger burble than most tracking suits. The single most important thing on the list (assuming you're not jumping some highly loaded elliptical canopy) is a longer bridle. I'd get one ASAP if you want to get into WS. The standard 6' one will work for a bit early on, but the first time you pitch and get nothing, nothing, nothing, more nothing, you're going to piss yourself. It's not a fun experience.