Ikea Algot clothes storage to plasterboard

[jackpot]

Wanting to convert a walk in cupboard in the kids bedroom into a wardrobe.

Been looking at the Ikea Algot storage ideas but wondering the best way to to fix to plasterboard stud walls.

Would several snap toggle bolts be ok to use for the uprights then all storage would be attached to these?

Or

Use the snap toggle to fix thin strip of mdf to increase surface area and attach uprights to the mdf.

Obviously i will look for the studs first but being a smallish cupboard i doubt they will be where i want them to be.

Any other methods?
Thanks