Nibsnibsnibs…

Hey everyone! I’m looking for some advice. I’m planning on buying a TWSBI 580, but I can’t decide whether to go for an EF or F nib. Currently, I use a LAMY Safari EF. I’m thinking the EF nib on a TWSBI will be too narrow. I added some sketches from my A5 notebook as a reference for my use. Thanks in advance!