well, first off about those listing pts values & rules posting...
as for the list, i've always thought it would be fun to see an assaulty guard army!
one problem with your list - the carapace armour. as it's an equipment doctrine in
must be applied to
every squad that can take it... (see the last bit in the paragraph about special equipment!)
i'd honestly work on getting a few more special weapons into the command squad however & a veteran w/company standard in the hq command. (re-rolls save the day!)
it also wouldn't hurt to take a few support squads as part of your hq either... some rocket launchers to cover your advance perhaps?!
i'd also forget about hardened fighters personally. yes it fits the background nicely, but overall it's a fairly worthless doctrine... (you'll still hit most things on 4's so just get more bodies instead!)
a hellhound or two would be ace, as would some sentinels for some more long ranged anti-tank...
hope this helps,
cheers!