Fist of all, all way's make a bank first to speed up the process. Then make a forge. Set spawn to repeat and turn on Power. The make a generator and then a Armory. Set the Armory to Power. Unleash a couple A 25 Romans and turn on Rally to defend yourself for bit. Then fully upgrade all of your buildings(you will have to spawn more A-25's while your upgrading.) OK so now that you have upgraded you can now attack. Leave some defense behind. When you in take some Gladiators with you. Also bring some anti tank units with you. And some airborne machines to stop the Black queens. No bring in some firepower. You may have to repeat the process a few times. Keep doing it until they go down. Arsenal Strike Now make a bank, then an outpost, and two armories. Set both of the armories on the men. No set up some defenses and upgrade you buildings. When they all done move in with some tanks. Leave a few tanks behind to guard also. Take in a lot of infantry with you.they should be taken down easily if you overwhelm the enemy. Keep spawning Arsenal until they go down.
Well heres the basics to making a colony strategy. For most part u start with bank, or armory if trying for getting an unit like sakata mk2 or groditz early or a monarch build. Next option should be either a post or forge, if monarch possible missles. This protects from rushes and lets u attack early. Next you should make a resource building that will either help u tech like armory, or make resources for majority of ur strategy such as a generator for post. Last building probably should be a armory if u havent already unless for some reason u dont plan on teching up. This is a basic outline on builds except specialized government builds, Fast techs, and monarchy builds. Those you should probably learn from experience. Also the best strategy is one where u can change units and building order based on what the opponent is doing or being able to rush early while still teching up fairly fast. Micro also has alot to do with it because u can make the most out of the few units u have for ex. a roflcopter microing say groditz is possible or using marines to take out multiple scouts using waves and micro. Never make build on 1 unit alone it will fail miserably. Make use of buildings early, u can solve most problems without those spiders. Rushing is never bad if done right. U force the enemy to use up resources trying to counter u while u can use what units u have to fight will u tech up. The end result usually ends with either a low resources opponent with 5 to no units while u have hover on way or you lost the game.