Most of my bikes fit into that category! Enjoy both your new and old rides....

But once you are ready you should get that coaster brake looked at so you can enjoy the old one as much as the new one. I have an old article from the 60s that shows how the Bendix engineer (they made brakes and hubs for some American bikes) tested their coasters on a steep hill. They'd have the linings burning by the end of the test but they still worked.....so there - the bar is set high!