I completely "rebuilt" my front end last summer. EVERYTHING was replaced, even a pair of brand new birfs.
I would order an OEM front end rebuild kit from your favorite ToYo dealer/vendor; gaskets, bearings, bolts, etc. + all the oil(s) and grease. <This should cost about $270ish + the cost of oil & grease.
How bad is the clicking? Would you feel comfortable just swapping the birfs, left to right, or would you buy a new pair?...because you will not know if the "swap" was good enough until you put it all back together and test it. If it still clicks, then you will need to take it all back apart and put in new birfs....ask me how I know

. I paid about $525 for a new pair of aftermarket birfs and my front end is better than new.
I did/do all my work at my buddy's house in Bloom, who has ALL the tools one could ever need and who is an awesome welder as well. I am sure for a very small fee and some life-water (for him it is budweiser), he would help you get it done.
Figure on it taking 2 full days and yes it is greasy as hell but not as bad as you think.