I wouldn't go with a cheapo diesel-side pump. I haven't personally installed an electric diesel pump on my IDI, but I've read enough posts on FTE to know that everyone swears by the duralift pump. It's up to you though.

I have pics of my veg system, but I've been waiting to make a page on my website showcasing the install. I'm kind of busy for the next few weeks, so I don't anticipate having anything up for a few months. But to answer your question, i split the hardline from the diesel filter head output to the IP. If I were you, I'd use two duralift pumps, one for grease, and the other for the diesel side. FPHE's are everywhere, just don't get copper. and valves.... i mentioned that in a previous post.

If you plan ahead and wait for sales/ebay/amazon/etc, you can pick up lots of good components for 10%/20%/50% off regular price.