A good A Miner with 2 good C2s will rack in easily > 10M credits / turn ... regardless of being a pop, CG or mineral miner. That allows you to build up to about 50M PR for Hoko / Lakko combo before putting you in a deficit situation.
well, depends an attack on carefull, the usualy thging for pyth spammers you are doomed anyway. Basically i would try to keep a balanced stack, then you only loose 2 colonies...