New diesel owner (1984 300 TD wagon) things to do first?

[DigitalMocking]

My hippie wife has decided she wants to give up her SUV for an older diesel that we can use biodiesel in or even SVO once we're set up for it.

I've got a great mechanic who is doing the glow plugs and checking the car over (oil change, transmission fluid, belts, hoses, filters etc) and I'm planning on cleaning the injectors myself this weekend. It's been 20 years since I worked on a diesel, but since this is a 24 year old engine, I should be ok :p

Is there anything else I should be doing early on to the car? Things to look for? The car seems to be in great shape, starts a little rough, doesn't smoke much however and runs great once it's warmed up.

Living in Portland OR, there's a decent number of places to get Biodiesel, but I'm really interested in running SVO or making my own biodiesel. There's a dearth of information on the net, almost overwhelming at times. There seems to be some hostility on the boards here to running SVO in a mercedes, is it really a problem?

The easy way seems to be putting in the second tank system from greasecar, but I'm seeing a lot of supposed testimonials from people using inline fuel heaters to run SVO or a mix of SVO/Diesel. Are there problems to running SVO with an inline fuel heater?

Sorry for the big bunch of questions, I'm pretty excited to get this going.