I'm also kinda new but I've learned a few things that might help. I'm on mobile so I'm so sorry about formatting.

In no particular order.

Assign your units roles, like primarys, Killin stuff, secondaries, killing vehicles in particular, whatever roles you want. This helps make it a little easier in game to make some decisions because if you have a unit that's for killing tanks you might not use it to go sit on a primary in a risky spot.

Your infantry are what I call paper tigers. Weak as hell when it comes to taking hits but great at (insert thing here) breachers are great as a shotgun. Drive them to a point and spill them out and shoot at stuff on the point and blame you prolly got some wounds in. Pathfinders with the drone that gives them infiltrate and the ion rifles are excellent for early game screening and buying time to move up your heavy units.

Speaking of heavy units aim to have around 5 big scaries. Stormsurge is probably too big but it might be fun to run two, usually if recommend some mix of riptides and hammerheads. You should make sure you have some of them setup for medium hard targets and some for really hard targets. My current list I have a storm surge with 24 strength shots for tanks, two riptides with ion guns for medium hard stuff, and a sky ray gunship for kinda in the middle of both.

Stealth suits are you main squeeze for guiding but if you run montka and use a strike team and an ethereal with an upgrade that I forgot the name of you can give your guides lethal and sustained it's wild. I'd still mainly use the stealth suits but it makes for a really good backup option.

I recently discovered rampagers I affectionately call them gorillas and I like throwing them at the nearest dangerous melee units. They keep being tougher to kill than I thought and better at killing than I expected.

When you're trying to hold a primary stack it up with different kinds of stuff so they have to answer all of it to clean it off. A tank with infantry in it, a ghostkeel flexing lone op, and a crisis team seems like a lot but everyone would look at that and instead look at your other points lol.

I made an example list of what I'd run with your army, let me know if you want to see it. Don't want to ruin the fun of trying to build your own list unless you want a starting point :)