Yes go for the 1400 it dos'nt come as a kit but you can just buy it in parts, make sure you get the bullet starter as well.

Buy the ecu valves etc direct from Gasper, the new JJ pump J200 is actually very good there old one is only suitable for bench running.

When you build it yourself you can check the fuel ring etc, you will then need to get someone to electronically balance it or do it yourself by hand.

I done a stripdown/rebuild thread a while back might be of some use.
[link=http://www.rcuniverse.com/forum/m_9458885/anchors_9458885/mpage_1/key_/anchor/tm.htm#9458885]JJ1400 stripdown[/link]