Data Sphere

Allready have the Op Ice Storm Minis. Is this a good complement to build up my army?

1 Dragoe T.A.G.
1 Jotum T.A.G.
1 Armored Cavalry T.A.G.
1 Cutter T.A.G.
1 Dronebots Remotes Box Set
1 Dire Foes Train Rescue Box Set
1 Neoterra Bolts Box Set 2 Knights Hospitaller
1 Knight of Santiago Combi Rifle
1 Knight of Montessa Combi Rifle
1 Aquilla Guard Multi Rifle
1 Swiss Guard HMG
1 Indigo Spec. Ops
1 Jeanne D' Arc 1 Jeanne D' Arc 2.0

The OP:Icestorm is a good base, yes.

The following list - I'd say 4 TAGs are too much. You're not going to field them anyway, at least not in an army list of up to 400pts (current maximum tournament size) without getting seriously Order-starved.
TAGs are tough, but there are weapons that can disable them with one hit...

I'd definitely suggest you to come up slow. Buy a TAG if you wish and use it to proxy all other TAGs for a time.
A box of Dronbots is a good call.
But you have a lof of point-expensive models (Joan of Arc, Hospitalier Knights, Montessa Knights, Swiss Guard, Aquila Guard), and not so many models (save for the Op: Icestorm and maybe Bolts) to back them up.

Also, I'd suggest a Support Box.

Support Box? Where can I find info on this?

Oh, it is now called Support Pack. Sorry.

I agree with Errhile.. TAGs are awesome, but not necessary.

Next to that, you really need to learn to use a TAG, especially PanO TAGs. They're pricey and tough, but like Errhile said they can be killed with a lucky dice roll before they do anything. You need to learn to cope with such a set back. Don't make it yourself too hard from the start!

Start slow. Again, this isn't WM/H, the big units aren't a necessity. The units in your list are cool, but do not really make up a list (most are expensive heavy infantry models). For example, try to fit them in a 300 point list, and still reach the 10 orders minimum. It will be hard.

Keep in mind that in Infinity need to focus on counters of tricks, or invest in tricks for your own army.
Couple of examples:
A Hexa and a Croc Man with their Thermo-Optic Camouflage (trick), or a Nisse and Bagh Mari with their visors to counter camouflage in your opponent's armies (counter).
An Akalis with its aerial deployment (trick), and a Fusilier hacker that can throw a wrench in your opponents aerial deployments. (counter).
That same Fusilier hacker can support your Bulleteer Remotes with software upgrades (trick), giving them the ability to shoot better, or protect your heavy infantry with programs so your ORC trooper will be protected from a hack early in the game.
Nothing in Infinity is one-dimensional, and you can adapt your strategy to the situation on the table.

My advice for PanO: focus a list on two or so cannons (Swiss Guard + Aquila for example) and fill it up with units that can counter some of your opponents tricks. Remotes are excellent with their toolbox of abilities, as is the Nisse for countering camouflage. For some extra surprise, you can bring an Akalis or a Hexa. Bring some Fusiliers to provide this force some back-up/orders/decent AROs.

Also, another thing I'd like to advise to you: don't make your early games to complex. 300 points each side and go both for 10 units per side. Drop 3 little objectives in the midline (25mm bases for example). You need to make a WIP roll in base2base contact with the objective. Pass it, and it's yours. Your opponent can steal them away from you. At the end of the game, every objective you control is 1 VP. Go for three rounds and just learn basic stuff, learn.

Little edit: Leave the Spec-Ops for now. It uses complex rules which demand you to at least understand the basics of the game. Also, only really usable in the Campaign Format.

Both Errhile and Scorch made excellent points.

I'd actually advise to start with a sectorial army instead of Vanilla PanO. It requires learning a few additional rules, but allows you to focus on fewer units that work well with each other, instead of getting bits and pieces from here and there. Icestorm gives you a few units not in any sectorial yet, but the game is very proxy-friendly, and most communities don't have problems with that. And it's easy to expand into other sectorials and vanilla once you have your little army up and running.