Read my blog navagrahastro.blogspot.in wherein I have elaborated how to evaluate a horoscope in detail scientifically. There is something called residential strength and Shadbala the combined effect of both has reduced the potency of Sun. Once you read my blog you will know how complex a mathematics is involved in evaluating a horoscope.
It is surprising that you did not know your uncle was a very rich. I appreciate your attitude that you are not after rich father in laws.