General comment......
If you've got other commitments of house, family and children, then my advice is take the simplest, cheapest route for your car.
You'll get tremendous thrills from finishing and driving your own low cost, low spec finished car than your hi spec, hi performance unfinshed kit sitting in the garage.
You can always upgrade it in future years when you have more time.
Just my 2 cents....
Peter
(P.S. It took me 5 years to 'finish' my Sportster and i've still got plenty of plans for it now it is registered)