I strongly recommend that all who desire aliyah simply go, and go now.
Unless you're already wealthy, you can't save enough money in this current economic climate to justify staying here.
If you do bring money with you, the Israeli government will confiscate most of it in taxes.
Unless they've recently changed things, the government is known for passing retroactive legislation; for taxes as well as other things. They have passed many tax laws stating that "everyone now owes more taxes plus the same percentage of income beginning five years ago!
No matter what the government there tells you or promises you, you should consider it all lies...once you're there, you'll have to fend for yourself for daily survival.
If you're young and fit, get a passport, buy a plane ticket, join a kibbutz with an ulpan to learn Hebrew, & you'll be well on your way within six months of landing on Israeli soil.
As far as I'm concerned, the idea of making a "comfortable living" while living in Eretz Yisrael, is an oxymoron.
Life in Israel is tough, difficult, and high-stress.
Rabbi Meir Kahane correctly stated, that the only reason for a Jew making aliyah, was to escape Jew-hatred by returning to our Land.
Any other line of reasoning for making aliyah constitutes either self-delusion, or fraud on the part of those seeking recruits for group aliyah.
Other than learning Hebrew, there is really no way to mentally prepare oneself for the culture shock and unpleasant realities that are daily life in Israel.
It is a fact that the majority of western immigrants to Israel fail in their endeavors; most returning deeply disillusioned to the U.S. or Europe within five years.
I do not mean to paint a totally dark picture of Israeli life, but once an American leaves America, the world is a starkly different place.
The mentality of the Middle East is quite alien to those of us in The New World; and those of us who grew up knowing Jews to be a refined, intellectual minority, are quite shocked upon encountering rude, offensive, and extremely aggressive people who never once read an "Ask Miss Manners" column in a newspaper.