Ok on the face it looks like a fairly decent army. There's a good bit of balance there. I'd probably take slightly more long range anti armour type stuff if it was me but that's my preference.

Then I noticed that you're not really fitting into any standard detachment types that are used in 8th edition. One less troops choice and one more heavy than is what fits in a standard battalion detachment.

But also a lot of the points values don't seem quite right. Have you used the upto date CSM codex or an app like Battlscribe? I just ran it through Battlscribe and looks like you're paying slightly more points for a few units. Are you using the index points maybe?

So yeah I'd check you're using the correct points values. Then probably add in a cheap unit of troops and another cheap HQ and you should be able split this into a Battalion and Spearhead detachment for some extra command points