I use 1c3 and 2c2 lr PA along with top gimbal MC on FAS and from my experience even with armoured PP its too hot, personally i use g 5 low emissions plant and biggest PA with thermal conduit, and i still go over 100% heat sometimes! But back to shield tank idea if used with a bit cooler weapons: 1 thermal res booster, 1HD booster, 1chaff and heatsink for utilities, c5 and c4 shield banks, guardian shield reinforcement are a bit of waste at bigger sizes, so use them on your smaller internals. No hrp's or mrp's, just run when you lost shields, you may use single mrp or hrp of smaller size if it make you feel better
But as Bob suggested bi-weave hybrid is a way to go, and 3 bottom hardpoints should be fixed weapons.