Guts build

So I’ve been doing some research throughout the internet, for a guts build from the anime/manga “berserk”. I’ve seen the Barb 9/ Fighter 3, and the Fighter 9/ Barb 3. In the manga/anime, Guts is seen wearing medium/ light armor through the golden age and then seen wearing heavy armor (berserker armor) after the eclipse. One problem I came across with is that you cannot rage with heavy armor; and usually people go for barb berserker for the subclass. I went 16 on strength and 16 on con. But I was thinking of doing Pad oathbreaker/Barb berserker, for the berserker armor Guts. Any suggestions?