massicist

You can make a portal for all regular teleports (except Trollheim and Ape Atoll), as well as Kharyrll (Canifis). No others. Fletching, probably yew longbows.

Most herblore methods vary between 25-35gp/xp, depending on current prices. If you want cheap go with serums, though they take a while to mix. Take a look at prices if you want something faster, all my calculations are rather old. I know recover special's fairly good gp/xp.

Haven't tested it myself, but I'm fairly sure Ahrim's has been proven better than void mage. As to your other question, all the information is here

Depending on what tasks you do, sl:su exp is roughly 1:0.9, so banking 99 summoning would get you up to around rank 800 slayer. Doubt you'd stay top 1,000 for more than a few months unless you kept going, slayer ranks move fast.

Using golds would kill you- they're so slow. In a similiar vein, greens are very high gp/xp (around 20 gp/xp last time I calculated it, which was admittedly a long time ago). If I was in your position I'd slay for the charms, as slayer ranks are hot :^_^:. If you don't care for ranks, CT waterfiends can easily yield 150 crimsons/hr. Also regarding your idea to make steel titans when you achieve 99, titans are easy to buy on GE, as are the scrolls, and often buy for lowest. If you're going for ranks then by all means, but it's not really worth it to make them. Yaks are the better option (or were: like I said I did all my calculations quite a while ago). EDIT: Just read the last bit of your post! Steel titans are worth using on anything you can, really. I use them when I do fire giants, nechs, dust devils, dagannoths, m-bloodveld. Probably more which I can't recall right now. I use the scrolls on anything which I don't cannon.

Fairly sure torso can still be picked up- it could in old Wildy anyway- and god books can too. I'm in the same situation regarding the duplicates. Can anyone else shed some light on the matter? I don't really want to waste the points on a pair of gloves which is going to disappear.

Does anyone know approximately how many Plank Makes can be cast in an hour? Thankyou.