Hi and welcome - i think you've made a good choice, it's very liberating being able to abstain from food and in fact not having the space to make bad food choices.
Advice? The first few days will be tough. I scheduled to start while i was off work, but not everyone can do that - certainly don't make any demands of yourself for the first week.
I strongly advise you to buy a hand blender (blend soups and shakes (put ice in the shakes before blending) as you really don't want lumps)
Also - a water filter
You will end up drinking oceans of plain water - get used to that. The urge to wee all the time gets easier.
when you buy your first week's stuff, buy some spares. There will be things you don't like (no advice there, everyone seems to like different stuff), and it's good not to have to force it down. Also, you might spill a pack. Keep a spare at work / in your bag / in the car. Being caught somewhere and have nothing to 'eat' is dangerous: you may go off plan.
try not to go off plan. They say the first time is the golden time. Getting back on it after a blip, cheat or break is much harder for lots of people. If it's unavoidable, plan exactly what you'll have and exactly when you're coming back.
Average loss on SS / SS+ is 3-4lbs a week. some weeks you'll probably have a lot less. Weightloss isn't logical or linear. Or fair. But if you stick on it 100% the weight will come off eventually. There's not much difference in losses between SS and SS+ - it just depends whether you'll find it easier or harder to stick to if you have a bit of food. I'd find it harder, lots of people couldn't manage without it. You'll find out which you are, if you don't know already.
Know why you're doing this. write it down. use your diary to vent and moan, and use the miniminers for advice and support. people here are lovely. except me, obviously.
Ooh - and take a good full length photo now. You'll thank me later. also, your measurements, if your cdc doesn't do it.