Help-Catalogue question!

[Floralaura]

I desoerately need a winter coat, as theres a 310 off £50 spend on the bargain thread I am going to get myself one..however I dont know how it works with the code..
I am ordering 4 coats as need to try them on

Hooded Quilted Parka Coat
Hooded Quilted Parka Coat
Item number:39L7Jcolourblack
Amend
£49.00
Hooded Cord Panel Quilted Jacket
Hooded Cord Panel Quilted Jacket
Item number:39V43colourblack
Amend
£15.00
Parka with Cable Knit Panel
Parka with Cable Knit Panel
Item number:37U6Gcolourcherry
Amend
£33.00
Quilted Animal Print Lined Jacket
Quilted Animal Print Lined Jacket
Item number:3MXCVcolournavy
Amend
£45

So not one alone is over the £50-However if I add a small item for £6 then if I keep the £49 or £45 one it takes me over the £50 if I return all the others bar that one and the gift. Will this work or am I really over thinking it?
Oh of I keep the £15 or £33 one then not bothered about the code as they are cheap enough anyway