98' LT Blazer 4x4

Ok here goes,
I have a 98' 4x4 Blazer LT with right at 100,000 Miles on it. Im currently overseas in Afghanistan and im getting ready to return home and im going to be doing some work on it as there are a couple of things that need to be done and some things that im sure need to be replaced for wear. So here are my questions, if anyone can help out or lend any info, I would greatly appreciate it.

(1)
I know I have atleast one front wheel bearing going out, I assume all that needs to be purchased to fix this is the whole Hub Assembly for the front, Im going to do both sides. during this is there anything else that should be looked at while everything is apart, putting new rotors and brakepads on aswell ( all four )

(2)
My Transfer case is the one that uses the 3 bottons on the 4x4. It stopped working awhile back and now I have got the money to fix it. It just clicks when I press any of the buttons but if i disconnect the battery, the reconnect and try to switch then it acts like it trys to shift but then it wont, then just back to clicking. I thought I had it narrowed down to the motor on the TC but still looking for anyone else who has been down this road. Back about 2 years ago I was going down the interstate around 70 and experienced a real fast clicking, viberation and as I slowed it go louder until around 8mph its stopped... this happened like twice within acouple of months of each other but never has happened again in 20k some miles, I believe this is around the time the 4x4 stopped working, and no, I wasnt in 4x4 when this happened, but the best I can guess is it may have been trying to engage, or maybe its completly unrelated.

(3)
There is a noise coming out of the passenger side floor board, sounds just like a turn signal rely is stuck, but doesnt happen all the time, about 75% of the time. Turn signals still work and when this clicking noise is happening, the turn signals are not working unless you command them to work, so maybe not the same rely or maybe so?

(4)
Is there anything else that needs to be checked at this mileage range? I have already had aftermarket Instake Gasket put in due to the famious problem of leaking dexcool.

Thanks Again for any help that is provided and hopefully someone else can benefit down the road aswell. Sorry if any of the grammer is bad but I dont have much time on the computer and im trying to ponder these issues before it comes time to knock them out.

Justin

on the four wheel drive problem i would say that the problem is the actuator in the front differential. pull it out and have someone else push the button and see if the actuator is moving and if it is put a little pressure on it with your hand and see if it can handle it.

i also own a vortec blazer and everyone i have talked to with one including mine the fuel pump goes out a right around 100,000

Thanks for the info, Probably wouldn't be a bad idea to go ahead and replace the pump while im working on it. Never really thought about it.