My featherweight uses 3 argos drill motors (two for drive, 1 for the weapon) all running off a Zippy 3 cell 2.2Ah 25C battery (http://www.hobbyking.co.uk/hobbyking...arehouse_.html). It gets quite warm after a long fight, but I've only recently blown the 30A fuse in it (upgraded the fuse to 60A as a quick fix for the event, but really need to downgrade it to 40A or similar). You should be fine on a 40A fuse or there abouts if you're only running 2 drills on a 4 cell battery.

I use a random mix of cables, but they're all around 12 awg. A good rule of thumb is to look at what size the cables coming out of the battery are and go for something around that..

I use XT60 connectors (http://www.hobbyking.co.uk/hobbyking...dProduct=46611) for my powerlink/ other connections. As it's the same as what's on your battery, it makes sense to use it for the rest of the robot.

You may have seen this already, but no one seemed to have pointed it out on here; TZ85 ESCs are brushless ESCs, so won't work with drill motors without being reprogrammed first. I believe you can get them pre-reprogrammed on some websites, otherwise you'll need to get someone to reprogram them or do it yourself. Someone with more experience double check this; I've never used them myself, though I have heard/ seen that they are pretty much bullet proof.

What parts have you got so far out of interest?