If you have already pledged and want to adjust that pledge to a different amount or to a different tier, simply come back to the UP FRONT main page and you will see a button called, "Manage Your Pledge" just under where is show backers, amount pledged and days to go. Click on that button and you will be able to adjust your payment and/or pledge.
Yes (and no). We cannot sell multiples of limited quantity tiers under one username. However, for all the unlimited tiers, you can buy multiples (to a maximum of two (2) additional copies) under one pledge. Simply pay the amount for how many copies of the tier you want and the required amount of shipping fees. Shipping for multiple tiers will be discounted slightly as follows;
Canada - $10 shipping for first complete tier and $5 for each additional complete tier.
Europe - $35 shipping for first complete tier and $20 for each additional complete tier.
International (other than Europe) - $45 shipping for first complete tier and $25 for each additional complete tier.
Unfortunately, there will the the "SS" symbol on cover of the SS Pack. However, if you are worried that the SS Pack may cause issues with your customs, there will be a question on the campaign-end survey that lets you opt out of the SS Pack. If you opt out, you will receive all the stretch rewards EXCEPT the SS Pack and thereby avoid any potential issues through customs.