As you said you mentioned soloing, bring a ring of wealth. It can allow you to get better drops. The RS gold ring of life is better to attract if you're lootsharing with somebody, cause wealth doesn't work with lootshare busy. You will have a hard time getting any great specs with a dds on bandos, dmace strikes more frequently on bigger creatures. Only exception is if you do not have a bgs or a tasset to shield from bandos minions. Even after that, you really don't need them believing the kill count is only a small part. It might be wiser to stick with the dragon boots.
The remainder of your inventories are great for starting. Editing them somewhat as time goes on to match you better. Nobody can tell you your perfect inventory, just trying it yourself might give you a hand with that. They could only tell you the crucial things. You have themso understand you just need to experiment a little to perfect them on your own.
Make an effort to get a LESSER demon task for murdering zamma. Don't go to the Pendant of Armadyl. There is other items you'll be able to wear that'll help you out with the boss far more than this. This amulet is simply good while getting your killcount. Even thenit slows it down because it will not help you. A good thing for armadyl, would be to bring zammy bracers rather than a coif, and cheap OSRS gold find an arma helm. It is somewhat more affordable and frees up the amulet place for something a bit more cheaper.