Thanks guys. I'll fire away with something specific that is troubling me.
First on all, the plane is 30-35cc size and I'm using a DLE35. I've read that the ignition on the DLE35 supports 4.8v-8.4v and I want to run LiFe batteries which are obviously 6.6v - Can I hook this straight up to the ignition without a regulator? Because I also read that the DLE30 doesn't like to be powered by anything above 5v however I'm not exactly sure what voltage range the DLE30 requires.
Secondly, I want to run an optical kill switch for peace of mind and I'm pretty sure that I want to use a Batshare too (I know some guys think this is overkill with a 30cc but I like the added peace of mind here as well). Now, do you think I should get two LiFe 2100, hook them up to the Batshare and then run my ignition from them too (how is this achieved?) or buy three LiFe batteries, two 2100 for the rx/servos and one1100/1300 for the ignition?