Newbie

hello everyone i 3d printed my first full armor in pla im completely new to all of this, im using a longer 220x220x250 printer im wondering what the best setting to print in cura are for armor for when I start my wife's armor and also does anyone have issues with mobilitiy in the armor I find iam a bit limted and cannot sit in this not a big deal we are making these for our annual halloween party this year and just curious. any other tips is greatly appreciated.

How do I appropriately size this piece the stl that I have is for an adult however from it seems on the small side. Being just over 8inches in height and 8 in across. In 6.1 tall and if I measure my hips I'm 13 in. And from top of waistband to bottom pants or groin seam 10inch . The height not a problem but how far across the waist should this piece go.