Hello, folks. 
I'm not very good engineer (and my english is devilish bad), but...
My first reactor (not perfect, but i like this design):
http://www.talonfiremage.pwp.blueyonder.co.uk/reactorplanner…jn4n0ew50o8sq4g
My first breeder. Positive, dangerous, effective:
http://www.talonfiremage.pwp.blueyonder.co.uk/reactorplanner…dukdbq6swfbx4cg