As for this specific specimen: there is no need to do HoF HC to prepare for ToT normal. If you can clear T14 normal you are ready for T15 normal. That's how it is tuned. You should do ToT LFR before ToT normal, and you can do some T14 LFR or normal as well (with using your coins to gear up). This way, you will easily get an ilvl of 490 (my alts get it in 2 weeks of doing the previously mentioned content). With an ilvl of 485-490 you should be able to kill Jin Rokh, and the other bosses till Magaera should provide some challenge but with practice ought to be progressable. The most stupid thing one can do is expecting a bunch of casual players (which you are if you are just starting with ToT normal) on one of the most punishing bosses on HC and expect it to go down swiftly (plus the reason for why doing HoF HC was dumb in the first place). Which, judging from his decision and reasoning, makes this raid leader a first class moron who is best to be replaced. Granted, for different reasons than the reason you provided (to the girl I'd like to say grow some skin), but the end result is still positive. Now lets hope you were able to recruit a better raid leader.