Not sure on the quantity for just starting out again.. should be fine
The arms section isn't too big as 2 of the excercises are for forearms.. And if I was you I wouldn't do the same forearm excercises week in week out.. they adjust quickly so switch it about aloads do like plate pinces or just hang from pullup bars and just generally mix it up (imo)
Also don't do it in order of how the guy there does it..
I would do it
chest, legs, back, shoulders, arms...
I'm not a fan of the chest day either.. I would do cable flies.. at the end but I would do some sort of bench instead of the usual flies like decline barbell but it's all up to you.. I'd just rather do another compound than do 2 different fly excercises..
Also I don't like the order of excercises for days such as in shoulders day or back day..
Finally I like to have variations of reps.. For some things I'll do 4x8 or 3x12 or 4x6 or 5x5 or 3x14 or 4x10... I want to focus slightly more on strength in some things and go for reps in others...
Maaaan I'm realising how fussy I'm getting
more editing: do some dips for you're tris.. also I like doing cgbp on tris day as it means you lift lots of weight with them and it slightly hits the chest again, for bi's I don't do much only do hammers and barbbell curls.. sometimes 1 more excercise if I feel like it (too knackered from the rest of the week
) I use to always badly neglect bi's because I don't want to be a bicep boy
final editing i hope: Wheres the core stuff? Do some proper core work 1 day a week where you feel you can be bothered.. Don't just do 100000 crunches ever morning