GET YOUR ACCOUNT RESET.
Use an auto clicker to alch and just get it reset so 1 defence. Before you do that transfer the wealth to a mule. And there you go, problem solved. It's not like you have such AMAZING stats that you need to preserve
If you're going to have any kind of staking account make it the lowest level possible. The trick to rapier stakers is that you need to get 80 dung/rapier THEN get reset so you'll have 73 dungeoneering making it look like you don't have rapier and you can get them to 2x you.
Dicing/Staking or don't bother. It's the only way to make big cash in a short time, yes there's a chance to get cleaned, but that's a risk you'll have to take. Strategically staking/dicing and it'll take insane odds to get cleaned.
On RuneWiki (I believe its called that, the RS Wiki) the have a page on what to alch for the most profit. As far as alching goes with profit, it'll be slim to none mostly because of GE buying limits. Anyways, if you're looking to make profit with magic training there's more effective ways.
Your best bet is W44 soul wars, like others said. You'll be averaging about 72.4k/hr not counting randoms. Overall about 70.5k/hr. I recommend botting at the most 18 hours a day. 24/7 is just making it obvious.
If your wondering items, I'd go with nature runes. They high alch for 223gp...