Ok, so I think the robot might be enough for us. The most important thing is having a ready made mechanical design and having all hardware decisions made for me. And having a working software from you I also think I'd be able to tinker with it and make it to exactly suit our needs.
Anyway, could you give any time frame for development of the third robot? How long do you think it my take for you to publish it? If it's not that long then maybe it doesn't make sense for us to build the current one, especially that unfortunately it is indeed just barely big enough for us. Or maybe you already have a part list and CADs for the new robot that you can sell? And we'd worry about the software later ;) I'd just like to know the overview of the situation before I commit myself to a decision, one way or another ;)