Fastest brushless setup advice

Hi, I am new to the site and this is my first. What I really need to know if what is the best motor and ESC I can run together? I was looking at the Neu line but I noticed this site only sells the 1515 1.5D which is 2700 KV and I was looking at the Neu 1515 1D which is 4100kv. This will be going in an all out electric revo I am building and I have built about 7 of them so far. Motors for them were mostly Novak HV 4.5's and I would really like something far beyond that. Every bit of info you can give me would be awsome, like what kind of ESC, Motor combo. Best batteries to use, and what experience you've had with these set-ups. Money's not A problem because I am selling 3 E-revo to build this one. Also when are the Neu's going to be back in stock. Thanks for any info.