Vanilla 3k power help

[cosmic kayak]

Hello. This is my generic non named legion 3k of space marines. I need to know if this list is too strong to bring to casual game day. I'm a beginner.

HQ

Cataphracti Praetor TH

Cataphracti Chaplain with Axe

Cataphracti Medicae

Elite

10 Cataphracti with dual lightning claws
W/ Barebones Spartan w flareshield

Contemptor with Melta and fist with melta and Havoc

Contemptor with 2x Las and Havoc

Troops:

2x

10 man with Artificer and rhino with searchlights

Fast:

Sky hunter squad of 4. Multimelta and Axe

Heavy:

Kratos with Las upgrades

10 heavy Las squad w artifice and Aug

5 heavy Volkite squad x Artifice

[supple field]

It doesn't look too strong, just kinda looks a lot like a list built out of things you own rather running things because you want to run them. If that makes any sense

Oh btw, where are you attaching all of the HQs?

[cosmic kayak]

Yeah the Chaplain and medic are going in the man squad of lightning claws. Praetor is going wherever. And yes. It is a list of things I own. I wanted to make a quick 3k before I started going into technical.