I like how every diesel threads turns into a "you don't need a diesel" thread.
Anyhow, Have you thought about getting an automatic? Standards in the Fords are not very common and almost always demand a premium. The auto's have a bad name but it's pretty easy to get 100k miles, especially since your only planning on towing a bronco.
Having someone replace the auto: $1500-2000 (done this)
Having someone put in a stock clutch: $800-1200 (estimate)
Having someone put in a southbend clutch: $1800 (quoted this before)
I've been converted to auto's, I spend more time offroad than I do pulling anything and the auto is better suited for this.