To Buy or to DIY, here is my question

If I buy the speakers that appear closest to what I desire

they are $11k new and $8k used.

If I buy the raw speakers and build it 

the speakers alone are $2.2k.

That is a 3 way system.

Still must add costs of XOs and cabs.

Assume the total custom build cost would be about $3k.

The $8k speakers used are Proac D40Rs.

The raw components would be from ScanSpeak and SB acoustics

and include 10" woofer, 4.5" Mid and a planar ribbon tweeter.

MadiSound provides XO advice. 

Comments???