>>76765681
You will be absolutely fine with the 1" spin-lock style of adjustable dumbbells.
If you have any used sports goods stores in your area,
you can get a better deal usually.

Be aware, some designs on plates bigger than 10lb.
are too wide, and make movement hard on the dumbbell.
(like the designs with holes in the plates around the outside.)
(perfectly fine on the curl bar though.)

A power block stand like OP has,
makes storage, loading, using them,
much easier too, but it may not be in your budget.