I have chosen jia-zi as his hour pillar. Jia and ji combined and transformed the jia into earth star. This made the ji day master a strong one. Water stars are his wealth and hai-zi-chou forms a reservoir of his wealth. In his present ren-chen luck pillar, his favorable wealth star ren protrudes and are rooted in the water seasonal combo of hai-zi-chou. In this bing-shen year and bing-shen month, there are 2 sets of shen-zi-chen water frame which also represents his wealth. All these water seasonal combo and water frames gave him this massive inheritance.
For a strong ji day master, fire stars are negative. So, the bing-shen negative fu-yin is a sad event as he lost his father.
As for the Useful god, it has to be the output geng which is strong because of chou. Since ji-chou is a block of earth in the month pillar, chou is considered as earth month. The Useful god, geng is also well protected by the strong presence of the earth stars.