Required story missions (possible spoilers)

Right now I am just looking to complete the story mode. I was just wondering, which missions can I skip and beat the main storyline anyway. I am stuck on Toreno's flying mission D.O.E., but I just left it alone and went to Las Venturas to beat the rest of the missions. Now, I'm in Las Ventruas, am up to Up, Up and Away on the Heist missions. I don't think I even have to do those Heist missions to get the storyline completed. I am not sure though. I will eventually go back and do these later, as I have also left Zero's missions for later. I just want to know, which missions, or even sets of missions, can be skipped over and not completed while still completing the main storyline?

Right now, I have a Z on my map (Zero), a plane (D.O.E for Mike Toreno), a green money sign (Up, Up, and Away for Heist Missions), a G (for Frank Tenpenny), and a D (for Madd Dogg).

I think I have to do the G and the D missions, but I can leave the plane, the Z, and the money sign alone and still complete the main storyline.

In addition, In Las Venturas, I have also done You've Had Your Chips, Don Peyote, Intensive Care, and The Meat Business.

I have so much stuff going on right now I don't know what is required for the main storyline (not 100%) and what is not. Any help?

Thanks, but again, that is for 100% completion of the game. I just want to beat the storyline missions. I even have a better version of that link with descriptions on how to complete all of those, but what I am looking for is a required story mode list. Because I know you don't even have to bother with Zero's missions and you can still beat the storyline of the game. I also think the Heist can be left alone and you can still progress but I am not sure, same with the later Toreno missions (N.O.E., and the following few).

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you definitely don't have to bother with zero. my problem is that i can't beat driving school and if you beat driving school you get cesar missions, do you need those?

wish i knew. i did them, but im not sure if its totally necessary for the storyline. anyone know?

wait till u progress further in the storyline, it gets even more confusing over what is required or not

supply lines I think spoiler

Does any one know were you start the burger shot missions, i know not really a ''on-topic-post'' but i was just wondering

This is very old forum lol