You could join the Potion Promenade route :-) 2 each of bubble and gas, 30 herb garden plots, and 1 sparkly - the rest is up to you, but there are some suggestions there.
Or if not that route, any route! Routes are fun. I have made some good friends here because I curate the herb garden route.
And despite what Papa says, if you want to sell stuff in your tower, you go right ahead. There is nothing wrong with that!!