Two questions:
What's your budget? A D50 to D60 swap can be done in your driveway, but there's nothing cheap about it. I'm about 30 miles northeast of you, but I've lived in four different states and I can tell you that the price of an OBS Dana 60 was pretty similar no matter what my address. You are going to spend 600-1200 for the axle, and the price spread will depend on how much of the additional hardware you get. The springs, sway bar, driveshaft, etc all adds up, and you'll want to freshen that axle up while it's out and easy to work on.
How bad do you really want 4" of lift? You don't need 4" to clear 35s, I did it very inexpensively with a leveling kit ($70ish bucks) and a 2" body lift ($110 if I recall). A properly maintained D50 will wear tires and ride just fine, and you already have one under your truck. Take a look at my old rig with a 2" body lift. It got a lot of compliments and wore tires perfectly with the correct upper ball joints (very critical and overlooked on a D50).
You must be registered for see images attach
Don't confuse my response with claiming a D60 isn't a great axle. It is a fantastic front axle.
Don't confuse my response by telling you that a D60 can't be put under an OBS F250 in your driveway. It can be done.
There's one D60 for your truck on CL in Tacoma right now. They are asking $1200. Towcat had a very complete Dana 60 kit that was literally every single part. I don't know if it sold, but he was asking 1800 (link attached, you can use this link to get an idea of all the other parts you'll need).
I love a great driveway thrash, just know what you are getting in to.
Good luck whatever way you choose
https://www.oilburners.net/threads/dana-60-conversion-kit-from-a-1995-f350.83702/