Yep a very good post and one which is very wise to listen to. I am right now designing machine number two (first was a kit) and wishing I had built from the start. Though I have learned a lot and the machine is right now cutting parts to be sold which is paying for itself slowly.

Ask tins of questions. Get access to a CAD program (I would suggest ViaCAD as very affordable for the quality/support you get) or a lot of sketch paper and draw every detail out. Work it out then post it here and ask more questions. Trust me there is more then enough folks here who A) really know what they are talking about and B) really will try to help you get a good build for the money you put into it. Just remember that building slowly and with totally ridge mentality to precision will pay off for a very long time.

Best of luck and keep going.

Michael.