getting ready to build first x6 squared

[Timee80]

got a ex con b4 ft and just bought my x6 squared kit. Do i need to buy the e-speed motor plate brace? Wouldnt a longer screw and a nut work just as well? I dont mind buying parts that make a difference but not bothered about spending just on bling. Are the hangers really necessary?
Ive got the longer axles and extra bearings but do i NEED to buy anything else?. Ive decided im running ae shocks by the way