Are you employed full time? Will you be when you are building? General-ing takes a lot of time on the phone, time on the job, due-diligence, dedication, and did I mention time? IMO, You will end up pulling your hair out if your time on the job is only your walk-throughs after you get home from work. I would recommend finding a general (you can shop them until you find one that you are comfortable with at a price that you are comfortable with) and tell him exactly what you want to have a hand in, and what you don't care to have a hand in. If you try to do it all yourself with no experience, it will be very hard. It can be done, but you'll find out why most people don't do it on their own.
If you're worried about cost or want to be more in control of the costs, you may be able to find a contractor who will do the job for cost plus. This means that you can help pick whichever sub-contractors you want and whichever details (flooring, roofing, fixtures, etc.) and the general will make it happen and get it all done while you're at work not getting 100 phone calls throughout the day. At the end, you'll get a bill for all of the subs, materials, etc. plus 10% or 20% or whatever tacked on for the general's services. I have a buddy who does this, and it works well. he will usually bid on doing a few of the trades (framing and finish work) himself to make a little more on the job as well. Hope this helps. I'd recommend talking with Cascadia. I've heard nothing but good things about his work.