erm, for me i think your routine is kinda in a mess ?
March 04, Sunday - triceps + back
March 06, Tuesday - biceps
March 07, Wednesday - back

only 3 day difference between back workout and you're training bicep a day earlier before back which for me personally is a bad thing ? because as you train ur back,your biceps will start to give out. and having an exhausted bicep on back day is not good either as you can't go all out on the back day..

go for compound movement first.. just make it 3 day split for compound.. just my 2cent

hurmm, how long had you started? and only listening to your friend is not always a good thing. study and evaluate the info he is throwing at you..anyway,we'll see when you post your routine.. all the best yo