Want to build 5 Duplexes

[Clint L.]

Close to retiring. Me and son, who has fulltime job, have flipped 3 or 4 houses, built two spec homes and sold them. All done with cash, I get interest plus investment back, he takes profit.   

Bought land for 5 duplex's. Like to build 2 duplexes to start off. Should I finance these two or pay cash? Son has all the contacts for contractors and runs the jobs after work and summer when he is off for 3 months.

[Clint L.]

@Mike Reynolds Thanks for the welcome, like the site. I want to stay busy, like the idea of 10 or 15. Need to figure a way for son to own these down the road, been told I could borrow  70/80% on the 1st one after built and let my son pay the note. Then move on to the next one. Possible?