I would recommend this as well. but i see no reason why this person cannot be your cofounder. If you are building a software based company it would help to have a technical cofounder with a vested interest.

You don't sound like a traditional start-up, so most of the advice form startup school may not apply to you. You probably don't need someone who actually writes code day to day. I would get someone with high level expertise in building and running technical teams who can start from one developer and scale up. That person will lay out your technical infrastructure while you focus on the business side of things. This is definitely not an easy find, and is harder than finding some smart student who wants to play with latest technology x that does not fit well with your business plan.

I'm @shaded2 on twitter if you want to chat more