TR = tornado red - the colour of the red mk5 gti.
Jetseal is a good sealant, loved by many. Sealants don't sit well on wax so you would need to strip the wax back, re-prep the paintwork and then apply the sealant. Once fully cured, can be waxed over.
Final effects are always a personal thing - eg some people love the finish supernatural leaves behind, others don't.