I am a songwriter and a producer and I am learning how to compose and write music. I am going to be writing guitar, piano, bass and my own vocals. I notice that most sheet music of songs in the genre I am interested in usually have the male vocals transposed an octave higher up with the supporting harmony below. The bass lines are usually an octave higher in the transcriptions as well. I understand that this is for ease of reading. However, for my own arrangement purposes where I am going to be composing and arranging my own music and fitting my vocal parts in between the chords as opposed to on top of them, isn't it better to write things as they are since many times some of the harmony sits above my vocal part. I am looking to get into the best practice for this now. The notation will initially be for my own writing and arranging so it needs to be something I can practice and get comfortable with.
Here is an example. Lets say I start composing with my vocal melody which sits between C3 and middle C4 but I actually write it one octave higher as is most common. When I want to write my piano harmony part on the same grand staff the vocal will have taken that space on the treble clef so either I will also have to transpose the piano part or write it on another clef but for composing it is better to see both parts together.