Get 82 construction asap to boost for rejuv pool as it's nice and OP
Get barrows portal in house and between the pool / tele in house only thing you'll use supply wise is runes / the occasional shark if veracs hits you hard or occasional prayer dose if DH tunnel and no safe spot available
^also if you go the barrows route drop everything you're doing and get mort hard diary done otherwise you're missing out on quite a bit of gp / hr
Mage training arena for infinity boots (or whatever current best item is, usually it's boots but might have changed idk) although kind of tedious it's really good mage xp and make some solid gp overall if you grind out like 8-10 boots then by that time I imagine you'd hate yourself (I personally don't mind mta

)
Learning zulrah is definitely one of the best ways though, and having that rejuv pool + fairy ring + 71 agility would be ideal to have before zulrah though to maximize profit per hour (71 agility to summer pie to 76 for shortcut, or just get 76 which would make life easier)
^ would suggest to have at least ring of suffering / trident of swamps / blowpipe with addy darts as a minimum (ahrims /God d hide or void)
Could also just casually slay, as you get into the 70s and start getting kurask / gargs those are like 500k+ profit tasks or can even do konar slayer as each brimstone key is 100k~ average and they stack up nicely if you put the hours in
Another way would be getting 59 rc and making double cosmics (last time I knew this was like 600k gp / hr) not sure or current prices but it's not terrible for some casual gp with low requirement
Do mm2 and can kill demonic gorillas for the zenyte, although doing this you can go pretty dry at times all the other drops make you 500k+ an hour as is then when you do get that zenyte it's real nice
Edit : on the demonic gorillas portion i would suggest doing slayer and just doing gorillas when you get a black demon task so you get benefits of the slay helm to increase gp / hr + gives you a break from them doing other tasks in mean time and it all makes a good profit overall
This post was edited by Starcrater on Jul 8 2020 07:40am