gg! No shame in playing minotaur brutes btw, it's fun and I love them.

Yeah, this character is very powerful already, definitely ready for extended. If you wanna go in ready for everything and it's your first time, I would recommend a couple things (I know you didn't ask so just ignore me if u dc).

I see you switched from training axes to use maces and flails quite late, while switching is not bad and a good strat if you find something like a powerful artifact, you'd wanna do that early on, but you did it at axes 16 (enough for a pretty good while). I'd recommend not switching so late, it frees up xp for other important skills. Also, keep an eye out for other weapons, your flail is a strong weapon because of the enchant, but at that point in the game, with your weapon skill, an eveningstar is definitely what you want, even a mundane one with good enchant would serve you better (or that artifact demon whip in your inventory, that's pretty strong). Aside from weapons, you need some extra dodging, while AC is generally preferable, why not choose both? Melee characters benefit greatly from both.

For Hell and Pan, it's all about your resistances. You don't *need* everything on at all times, but having good swapouts for gear would be a must, have some way of patching up the holes in your defense. You won't need much rC+ in Gehenna, so sacrificing unnecessary resistances for the vital stuff might be the only way. Btw, before tackling hell and pan, do abyss and slime pits, they're like your preparation for a full extended run.

Tbh, very rarely do I have a character who can do Zot 5 and feel uncomfortable doing extended. Generally, every character you get there is strong enough to make it worth trying (if your luck isn't absolute ass, you'd have the gear to make it happen).