We are looking to put a 200 sf (approx) patio in our backyard make of 15" x 15" concrete pavers. Right now, the yard is graded slightly downward toward the house, so we need someone to grade the other direction, flatten it all out, lay the sand, etc and lay the pavers. We will provide all supplies. Please reply with a cost estimate and time needed to complete. We are looking to make this happen asap.