When I discovered that the Splurgess had a straight stitch plate I literally Gasped in Joy!!! as it was something Ive really really wanted and it makes straight stitching so much easier if you are a puller of fabric.
@Bill listen closely as I shall say this only once .... Ditch the feet you had before they Will Not fit!
Sell them, Give them away or Donate them to your local charity ... Get them OUT of the house!
You do
not need them, They will
not fit ...
You have bought the most marvellous machine brand new in perfect working order with all the accessories you could possibly need ... You have the Accufeed quilting set for Gawds sake ... Even I havent used those and Ive been sewing a lot longer than you.
So get those random feet Out and Away so theres no temptation to try them and screw up your dream machine!