What to choose.

Have some extra $. I was going to purchase a lift that was going to run about $2500.00. At the moment I have a 3" rough country and was looking to go to a 4" lift. Possibly the EVO lift.
I am also currently running 35" tires on a D-30 front axle. I was thinking about scrapping the lift idea and purchasing a ProRock44 unlimited. Just the housing thou. This way I can build it through the year. So by the time I need tires, I could have this built and ready to install. Then I could go with 37" tires.
Any opinions or feedback would be great. Thanks fellas.

Save the money for now. Buy the axle when you need it. You have time, never know what deal or "life event" may require the funds.

My pref would be to upgrade the axle, but do it when it when you do the tires.