Advice on drip system setup

https://preview.redd.it/m7marrsuc8pe1.png?width=834&format=png&auto=webp&s=0ff18f7e95348fc2119b50ddcfd0c5e475641f47

Hi everyone,

I'm planning on building a drip system for my balcony vegetable/herb planters. Can i get some opinions on whether this system will be ok running 4mm LDPE the entire way, since its not a large system, or whether i will need 13mm LDPE with 4mm LDPE coming off each of the T-peices. I've read that 4mm LDPE is ok as long as a single pipe length from the tap isn't over 10m. I will have a 1.7 Bar pressure reducer installed at the tap. Also - will it be ok to use a combination of 4l/h and 8l/h pressure compensated dripers? Red indicates a T-piece or elbow join. Each of the sections off a T-piece are 45cm long. Thanks!