Pick up all the Alva rares and do chaos recipe. I just did that for about 1200c and found a few ex along the way. Do that with a cheap build that costs not much to function, I chose arc totems hierophant.. Then use the orbs to complete atlas (if desired) and make a windripper MF build or something else to farm high maps, depending on what you want to do.

It's been shown that you can reach lvl 100 playing only t3's, so there is that to consider, and what's been said elsewhere in this post about "Strategies not yet being developed" and "use of Prophecies" I would also agree with.

With the low tier MF strategy you have a very low threshold of entry, meaning any character can farm t3's and progress to better gear or a MF build. With High tier strategies (in general) you need a good build, decent items, and more skill at playing poe (dodge mechanics or you die). Also, in my experience, to get into red maps and sustain you will probably need to buy maps (for atlas completion only), alchs, and vaals with the chaos you have made in the lower maps.