Just make sure you advise your cadet to order early. This way there is time to get replacements if there is any damage or size issues. Having the uniform earlier will make sure there is enough time to have them tailored and the accessories sewn on. The cadre will most likely let them know some options for tailoring in the area.
Son's battalion had someone that helped with the measurements and with the ordering, it's pretty easy for the cadet to handle on their own, the site is very user friendly and the Commissioning Package comes with everything they need except shoes if they want a new pair, also they can order the Bus Driver Hat (That's what my son called it) as an extra.
There is also an upgraded option that is available for the uniform and the shoulder bars, costs a bit more but really does look nice and better material.