Raiding on lordearon

Hi, i just came back to game recently with few friends, we wanted to get x1 experience but except me and one guy who "tried" wow before they are all fresh to game, i was not expecting to clear 25hc LK with them, but at least finish all normal raids and have some fun. YET i heard that bosses are boosted AF, im not sure whats true whats not. 50%moreHP and 50% shorter enrage on DB for example? Thats what someone told me, i remember that boss well and any of those buffs would be mad. No % buff and everything else. Are Those Raids like ToC or ICC/Ulduar Even doable for non-hardcore players? or should we switch the serwer. They are not noobs, they are not new to games just new to wow but i can be rought at start. Thanks for info all have a nice day.

no its not that big a buff otherwise it would be impossible. iirc Marrowgar25 nm 23.7m Hp on retail, and 35.6m Hp on lordaeron with a 6min enrage timer