replacing 3" lift kit w/ bilistein and eibach

So I am looking at buying a 2003 prerunner trd tacoma. it has 285 tires and what looks like a 3" lift. blocks and coil spacer. I want to replace it w/ 5100 billies and some eibach coils and a toytec AAL. my question is: is it possible to replace it piece by piece and in what order or should i just buy it and install it all at once. any help is appreciated. thanks.

 

I'd replace all at once. How long has the lift been on the truck

 

I'd just put it all on once. No point in bringing out the coil compressor more than once.

 

I concur with the others. I'd get everything and do it at once.

 

Not sure really. A toyota dealership is selling the truck so I doubt they know. But at least this will keep my content with the height of my truck until I can save up for a new lift. I'm in college and I'll be paying my insurance and car payment. And I'm paying off a ring for the lady. So this lift might be on there for another 6 months.