imalso doing the similar projects in the orange country near by. the rental service providers of which the cranes we are using are jus so excellent even more than i accept there cranes are new, coperative workers and most importantly they never made the saftey flaws. so u donot need to worry if u acc[et my advice and leave othe crane contractors. you will enjoy working with them cz they are already experienced even they will help you in some of the matters related to the design. so jus visit crane service Orange County for further information about them and the snaps of the cranes. even you can find cranes more than 75 Tons.