Yes, you don't have to go that far, but I would suggest you have some variety of 'ink' the wire wool and tea is more of a wash, but if you buy calligraphic ink, don't only use it 'neat', make up say 3 lots in 3 jars; keep some original, which will be as black as can be, then some for middle tone, and some for light, you will find that using the variety gives vibrancy to you drawing. Use brush as well as the bamboo pen, Van Gogh used this type of pen for his drawings, they are fun to make and each one has it's own characteristics, I have just counted 6, all much used, I have made standing here in a jam jar. Let me know how you get on.