May I ask a question? What in your opinion is the best cap ship in firepower?
In general, capital ships should not be used as your primary firepower. Early-game the Marza and Sova (for TEC) can have a commanding presence as combat units, but this role tapers off in the late-game and they become obscure support units in any major battle. If you can get them to high levels they can be absolutely amazing, but capital ships share experience, so if you have too many capital ships it's virtually impossible to level them all up. So in practice, the general consensus is that TEC should have 3-6 capital ships in the late game, no more.
The best way to deploy firepower is through frigates and cruisers. As TEC, that means the Javelis LRM, the Kodiak Heavy Cruiser, and the Percheron Carrier equipped with bombers. Fighters, flak frigates, and hoshikos make excellent units to round out your fleet. TEC really has no business with large swarms of capital ships; I've experimented heavily with large numbers of caps, and it really only works well for Advent, and for TEC you virtually never want more than 6 caps.