I'd shop around for installer prices as well. Don't go to 4x4 shops. Check out race shops that stock cars, sprinters or drag racers to go. They will have a lot more experience and are usually cheaper. Tell them you have the axles out. That will mean they can do a bench job and not have to tie up a rack to install gears.
Here's what I'd do; If you're tight on money then buy some used axles or salvage them yourself. You'll end up with a complete set of spares as well as getting 4.10/4.11 gears for probably less then you'd spend on getting yours regeared.
Option two, would be to search other forums for people who are swapping to D44's or better and are selling off their built stock axles. They will probably have 4.56's or 4.88's already in them. Again, you'll still have a complete set of spares. Which is good if you keep the D35.
Option three, do the 8.8" from a V8 Exploder. You can get 4.10 gears, disc brakes and an Eaton LSD.
Option four, get the 8.8" from a XLT Ranger. You'll have 4.56:1 but drums. These drums are still larger then your stock parts. Then swap to drums from an Explorer donor. You can swap drums yourself with minimal tools compared to regearing.
Option five, check forums for people selling Dana 44's or better to upgrade to 1Tons. These are usually salvaged axles that have been rebuilt to some extent. Not to mention, they already have all the work done so all you have to to is bolt them up.
Option six, find someone who knows how to install gears. Jeep clubs or friends of friends are probably where you'll find them. Typically, they will be willing to install gears for under $200 in labor. Then decide on if you want to regear the stock axles or move to the 8.8".
BTW: I'm guessing you have a 3-speed auto with those gears.
