Late last summer I moved into a new home, but decided to wait on the lawn until early next spring. Now that spring is here, I would like some input into my thought process of installing the new lawn. I live in West Michigan, ground is part clay/part dirt? and the lawn is currently overrun with weeds (dandelions, crab grass). My plan is to spray herbicide this week, in three weeks have topsoil brought in and have the lawn hyrdoseeded with Kentucky Bluegrass. Please give me your input on choosing a herbicide, any commonly unasked questions for the hydroseed company (I know to ask if they are licensed, chemicals used, etc.), and is there anything I can do to improve my process. Thank you.