I can help you if you need help. You don't need to use a payment processor but you have to be secure which can be challenging.
Highly recommend Gweedo. I have almost hired him a dozen times for projects (all that have fallen through have been my/partner's fault). I have discussed protocol with him extensively and seen his work. Plainly put, he knows his stuff inside and out. If you have the funds, and want a professional coder with bitcoind experience, he is your guy.