Wet to direct port nitrous?

I am in the market for a nitrous system and have found some very good priced wet kits for sale. Every direct port kit I have found has been atleast $200 more. So here is my question.
1) If I get eh wet kit and convert it to direct port do I just need the following:

Distribution block(s)
Foggers
Jets
Fuel/Nitrous lines

Is this all I would need to convert to direct port?

2) Should I run the standard hard lines, or go for some stainless steel braided lines? If so are there and premade SS line kits for this, I haven't found any.

2) I have heard that you want your nitrous lines longer than your fuel line because the nitrous is at a higher pressure and the nitrous will get there first. What length should I run the nitrous line to avoid this, or are there any other ways to avoid this?

Thanks, Doug