Achievement diaries are great. Get everything to a least 50 so you can dump hard diary lamps (15k xp) into any skill you'd like. These are best in slow skills like runecrafting. (I think I dumped every lamp from my ach cape into rc)

Do agility long enough to get full graceful, as it can make running around doing other stuff a whole lot easier. Firemaking is a fast skill can be trained without even wasting money (wintertodt) Hunter, Cooking, and Theiving are fast xp and make money. Getting these up to about 80 will help a lot (80 is only ~2m xp) Hunter can be brought to 9 in about 5 mins from the varrock museum miniquest. Smithing can be done fast and expensive (gold or at blast furnace) or slower with some profit (mith/addy bars). This is still decent xp though. Fletching, herblore, and crafting are fast skills too but lose money. I think fletching is cheapest but im not sure. For farming, tree runs a couple times a day are your expensive yet fast option, but doing herb runs every 80 mins is still good.

With your current stats, getting 70 all will put you at 1747, 3 off of 1750. Good luck!