If installing the suspension yourself set aside a few days you can run without the car, as I found out the hard way when a bush ripped and most of the bolts were seized and needed replacing. Thank God for ZMANALEX and his quick delivery.
Ive got BC's and rate them well so far, used them on a pistonhead hoon and was very happy with how they responded(took awhile to get the settings the way I liked, as uk roads are too bumpy for max dampener setting and the car jumps all over the joint, set the front to 25 and rear to 18)
Think you have a good budget and good choice of upgrades.