Couple questions on 1969 dart

My car won't be sitting higher in the front end will it? My goal is flat or a tad lower in the front. Or will I need to get drop spindles in the front?

Suspension can be trial and error.. since everything is new it will take some time and adjustment.. after you get it all together you are going to have to drive it some miles and let it flex... once it settles in you can make your stance adjustments and then get it realigned...