I have had 4 radial head implants 5th one soon only last less then a year. I'm only 30 would it be a better choice to do a total elbow replacement?

Not necessarily. It depends on the full nature of your problem. There are two joints in the elbow; the ulna-humeral and the radial-capitellar; a total elbow replaces all those where a radial head implant replaces only one part of the radial-capitellar joint. Why have you had so many failures? The answer to that question would guide the surgical decision making.