As you said you mentioned soloing, bring a ring of wealth.

[Weiweismart 0]

As you said you mentioned soloing, bring a ring of  RS gold wealth. It will allow you to get better drops. The ring of existence is far better to bring if you are lootsharing with someone, cause wealth does not work with lootshare active. You'll have difficulty getting any great specs using a dds on bandos, dmace hits more often on larger creatures. Stick with dragon boots on bandos. Only exception would be if you do not have a bgs or a tasset to protect from bandos minions. Even after that, you really don't need them considering the kill count is simply a little part. It might be wiser to stick with the dragon boots.

The remainder of your stocks are amazing for starting. Editing them a bit as time goes on to match you better. No one will tell you your ideal stock, only trying it yourself might help you out with that. They could only tell one of the significant things. You have them, so understand you just need to experiment a little to perfect them on your own.

Make a bid to acquire a LESSER demon task for murdering zamma. A blackmask or slayer helmet will be much superior than neitiznot. Do not go for the Pendant of Armadyl. There is other items you can wear that'll help you out with the boss a lot more than that. This amulet is simply good while getting your killcount. Even then, it slows down it because it will not really help you. A good item for armadyl, would be to bring zammy bracers rather than a coif, and  buy OSRS gold find an arma helm. It's a bit cheaper and frees up the amulet place for something a bit more cheaper.