Need Advice for DM Cannon (in General)

My curiosity is piqued and I am looking into the strategy and trying to figure out if this type of strategy could work out well for me.

My primary concern is that my FF will be very low level (it is currently A Rune of Balrog Flame lvl 5,333,252) which means it will have low damage and even lower HP. And if I devote everything into DM I will have around 302m EXP points just into DM which seems a bit like overkill.

So could anyone give me any advice on whether I should use another familiar (SF?) or if I could use part of my EXP and put it into something else other than DM.

At the upper end of the game the DM cannon falls short... You will gain a couple opponents but you will lose more than you gain. IMO the robf strat you are currently running will take you farther.

Yeah, that's what I was afraid of. It's so boring having the same strat forever though.

I was recently reminded that having a path in mind for your current strat makes all the difference. When it comes to stagnation, I always tried to pick a target and work towards it, it's only when I realize I couldn't beat, or keep beating a target without a setup chance that I actually retrained or bought up.

Would EC Cannon be any different or is it the same thing?

EC Cannon referring to either JF or HF.

if anything that's more specific, there are a hell of a lot more AS users than tanks

Then what about a tweaked DM cannon? Maybe 1 minion with HP/PL instead of DM? Or maybe AS? The main weakness of this strat seems to be its very low HP, but if I could find a way around that it might work.

Low HP doesn't matter, you're finding opponents that die in ranged that don't deal any ranged or not enough to matter.

The best targets are the AS/GA/AMF/DM rune of solitude targets that train just enough AMF to counter decay.

Those guys are 1 turn kills at 100% challenge bonus.