Looking for some guidance to better my chances of success. 

A partnership requires three things to be successful - Experience, Capital and Time.It looks like you have the capital and experience but maybe not the time.I have my doubts about this working if you have a friend who has weak credit and a limited cash flow.

I've worked with several loan servicers, and no matter who you use, it's not fun setting it up, but I've had easier success communicating with OnePoint.They have a login portal to track payments etc, like you mentioned. 

While this is a great and highly motivating goal, most people are either clueless or incorrect in their belief as to what is required to obtain this “lifestyle”.Understanding of the “how to” get there is further obscured by the misleading, and often patently false “pathways” sold by real estate educational MARKETING companies as workshops, upsold to association memberships, upsold to mentorships.

I've looked at every model of every new build of every company I can find and there's always problem with design, returns, etc.

Caution with any company that has these types of SOPs  once they have your money its gone.

It is basically like a wiki page for our company.

I'm a retired engineer and have been successfully using income from these houses to support my retirement without dipping into retirement savings.I'm transitioning my business from rentals to a franchise and would consider selling one of my houses (5 br/4 ba - the other houses my son while he's still attending).

You will be able to buy from that company just like any other company in Spain. 

@Steve K.As an investor who buys loans I can share your frustration with servicing companies.