Since price is open a custom built bike will be ideal for you. The builder can use the beefiest tubes available, and you can choose components based on the type of riding you do. Wheels are the only components you need to have built to accommodate your weight but it is definitely possible to get some pretty bombproof ones made. Almost all custom builders will get components and assemble your bike. The downside of a custom is most well known builders have a wait list of several months, some longer. Find someone that has experience building bikes for big guys, you don't want the builder to learn/experiment on what it takes to make an excellent big guy bike on your frame.

good luck, Brian