Shadowrunning in 2009, Techy time-travel to stop lone eagle Options

[Thistledown]

Ok, my standard group is trying out a new GM, (giving me a break), but he and I are working togather a lot out of character to make sure things go well. So, thought I'd ask for some advice here.

We know there is no magical time-travel in shadowrun, so he had a group set up a technological means of going to the past. The group's goal is to change the results of the "Lone Eagle Incident," which is what had a huge part in the Native Americans rallying so much and eventually led to the NAN's. The group want's to stop this. (Group is loosely based off the New Revolution in Threats2)

The head scientist for this group is working against her will, but manages to get a shadowrun team (us) to break into the facility, and use the same machine to go back and make sure the incident happens the way it did before.

Ok, it would have been nice for the scientist to give us a bit more info before we get to the facility, because now we can't leave until after the timeline is fixed. But anyway, we go back to Montana in 2009 about 3 weeks before the incident is scheduled.

For the magic characters, we basically called it a mana warp with a background count of 7. We also let metahumans keep their meta-ness, although disguises are needed for some. The party is also hiding any cyberware, etc.

He and I have even stranger things planned for later, where I might have more questions, but for now, I have only a few.

1. Two of the characters are interested in using knowledge of the stock market, etc. to earn money for our characters over the 55 years between then and ... now (2064). The GM told the players that they would be docked karma for messing with time like that, which the players have agreed to. My question here is, would it be possible to give a stock broker (or firm) a script of stocks to buy and sell at certain points in the next 50 years, and not need any contact with him for 50 years or so? They want to avoid knowing about any of this beforehand to avoid time-problems, so the broker would be told not to try and contact until later in 2064. Also, if this does work, what kind of complications would arrise from starting with about 10k and withdrawing it in the mucho bucks range later?

2. Questions of availability. If you wanted to get a hold of something, say, Heavy Military Armor, and told somebody that if they find one in that timespan, to hold unto it until 2064 for you, would you have to deal with availability, street index, etc? One of the characters has a contact who is old enough for this to work, but there's also the question of price for this kind of thing.

Any other ideas you have could be helpful to.