These rolls will be light and partly hollow inside.
I keep mine in a bread/produce paper bag over the kitchen counter - there’s no need to keep them refrigerated.
The rolls will soften once cooled. If you prefer a crust, just cut them in half and toast them for a couple of minutes.
The only way to ensure accurate measurement of ingredients is with Metric Kitchen Scales. Click
HERE for the ones I use, or
HERE for U.S. alternative.