I blended some Yemen with the Sulawesi blue (one batch 50/50, the other with a Brazil base 50% Yemen 25% Sula 25%)...haven't tried them yet. You could try Yemen / Sumatra as 'mocha java' substitute. Maybe if you roast those two and the Indian separately, then you could play around with a few blends (e.g. one with just the Yemen / Sumatran, one using the india as a base, and with other two in smaller quantities). I'm a sook and drink most of my coffees as lattes / flat whites.