I have the newest version of "deal on wheels" and it had some Dodd-Frank info in it but most of what I have found has been very general or hear-say from people that have done it but never had it questioned in court.
If you only plan on doing one owner finance sale then it is not too big of a deal, just make sure you do your credit checks and find a good title company to make sure the lien is done properly against the structure AND the land.
With the Dodd-Frank act it made owner financing a little trickier. The second and third properties that you sell have to be fixed rate, etc. and have some more restrictions. The forth property (in a 12 month period) has to be done by a certified loan originator, which you can probably pay a loan mortgage broker to do for you but will cost some money.
I do not rule out owner finance sales but I always end up making my flips FHA loan qualified and let the buyer get their own financing. Less headaches in the long run and I get my money back faster.