The cruzbike kit may end up being more trouble then it is worth but for a first build and is to be more of a utility/commuting/*caugh*electric*caugh* bike so I'll use it and see how it works. The problem I found with it is that it puts the bottom bracket a good four inches further then it needs to be to clear the wheel to give that wide range or adjustments and/or to reuse as many parts as they could from existing parts.
Sooo what this means is I couldn't go as low as I wanted. My wife came out to the workshop with me for a while and found my old office chair was a great way to test seating height since it adjusts from 12 to 30 inches. Ended up finding that right about 16-17 inches gave me the bottom bracket over seat height I was looking for.
Was able to reuse the seat mount from the cruzbike kit by cutting in half a tube and welding it on top of the frame just behind the wheel. For now I'll reuse the cruzbike seat since it's free and all.
Just gotta make the brace to attach the spring and figure out some easy way to attach the seat to make it adjustable. I just remembered I might have a spare pair of bacchetta seat struts That would be a good temporary fix.

I fear measuring that wheel base. I'm gonna call is a medium wheel base bike and just make sure I never line up next to Ray when he is on his LWB.

That cruzbike/xtracycle pic is the original reason I got the cruzbike softrider V1 which happened to be the prototype one. I'm using it like one would a kit though. The long chain on my diamond frame with the xtracycle kit was always a big pain. I thought I could try the cruzbike MBB out and get a recumbent xtracycle. If I liked the MBB I might invest in say a silvio or something.  
Ended up though that the 26" seat height was just way too high for me I couldn't deal. The silvio knocks a few inches off of that but I couldn't really ride my sofrider enough to tell if I liked the MBB thing.
I do have the plans and some items to make my own front triangle which I might do if what I have works. Basically I'm just trying to  lower the original sofrider I have a good 8-10 inches.
I'm 80% thinking this is going to fail miserably and I"ll put back the fork and rear suspension back on the sofrider and sell it on the cheap which I might do anyways if I build my own from triangle so I might as well finish it. It is good practice for my next bike just trying to decide python or zox tilting trike. I like the looks of the python buy I can't see riding a bike without steering out in traffic.  
 
Good news for me. I found my old bacchetta seat stays. I plan on just bolting those up for an easily adjustable seat back so I just need to get the rear suspension connected and I'm good.

Mark, it's starting to look a bit like the Zockra :http://www.zockrabikes.com/index.php?option=com_content&view=article&id= 1&Itemid=8

Someone just posted this on BROL. A much cleaner more refined non suspended version of what I'm trying to do.

I hope one day I can do something like the above.. But I post it because it matched the handlebar the recline I hope to have and the seat to bb height. Even has about the same pivot angle so it could work.

Nice.  
 
I think I'm going to go with a 20/26 like he Zockra.  Of course mine will be heavy steel tubng and not CF...trying to mod a 20' rear triangle for the front, and have to add the forks...mostly taking things apart and thinking in the garage today...

That bike looks sweet, Jim!  What size front tire?

Tell me about it - I'm SO glad I quit coaching this year.  Baseball season in HS in just ridiculous.

If you don't have a suspension on the rear the taller rear wheel along with a wider then racing tire might help a little with the bumps. Other then that i dunnu. I like having one tire size on a bike myself that was I can carry a spare that will fit both and tubes that will fit both. Having a smaller wheel in back will alow you to tuck it further under the seat and make the bike much shorter overall which will change handling perhaps. The difference between my cruzbike and hurricane is pretty drastic but is only a problem if I forget which bike I'm on.
 
Course I now have a feature that puglsey was claiming for a bit. I have dual 135mm hubs so I could carry a rear wheel that is actually rear and be able to swap it up front if necessary. I can run a flip flop hub or perhaps keep a racing cassette on the back to swap up front but I'm not sure why. If it was snowing winter riding perhaps but I haven't frozen any freewheels down here. Ok maybe not so useful here but it could be useful if I wanted to run my current electric setup through a chain to the rear wheel and not have it affect my pedaling chainline