I need help. I have taken the task of estimating a job I pretty sure have the job just can not go to high and can not go two low as to cut myself short on profit. Roughly going to use about 80cubic yards of mulch, build 3 stacked rock walls about 1 to 2' high and about 6 to 10' long, 3 or 4 pallets of rock? Guy also wants about 200 foot of steel HD bed edging, plants to add color, 3 yrds of large river rock, and a new bed installed around a group of trees in the side lot. Do not know how to price the walls and do not want to do everything by the hour. This could be a very good job for me to get and get done right. Just looking for a little advice on best way to attack this quote.