Welcome to the forums and playing Epic

It's a great game!
You seem to be using an out of date army list there and the points have changed slightly since (IG Regimental HQ now costs 450 not 500).
There’s a geographical divergence in what Epic army lists people use - if you’re a UK player use the Epic UK tournament army lists -
http://epic-uk.co.uk/wp/army-lists/ If you’re elsewhere in the world use the Net-EA tournament pack army lists instead -
https://tp.net-armageddon.org/ Both sets of army lists are balanced fine and mostly similar but use whichever is normally used in your geographical area. The game rules are the same across the world, it’s just the army lists that diverged many years ago between the different groups.
3-4 activations per 1,000 points is often recommended as a good guide.
Shadowswords are probably the best individual unit in the Guard list and one of the best units in Epic entirely. Baneblades are ok but a bit trickier to get the best use of. One or each could be better than two Baneblades.
The supreme commander is normally worth taking in a Guard list for that re-roll.
You have no anti aircraft attacks in your list but I'm guessing you and your opponent are not using aircraft for your first few games while learning the rules? Normally you'd want at least a couple of Hydras for AA but ok to skip these if not using aircraft initially.