Oh no! Theres a zombie apocalypse! Fortunately, your neighbors a pretty cool guy, and has some stuff to offer for you, although, you can only take 2.
1: immunity
Not that much to explain here. When you use this, you are granted immunity for 1 hour.
2: Jetpack
Also not much to explain. It can be used for 10 straight minutes at a time and can be filled with gas and electricity.
3: Enderpearls
For the non minecraft players, an enderpearl is an item in which you throw and then teleport to wherever the enderpearl lands. You will be given 3 of these.
4: 30 pounds of water or food
Only can choose one here, and it’s pretty straight forwards. Water comes from a water bottle and infinitely spouts out when held upside down. 1 pound of food comes in your box every 30 minutes.
5: 1k worth of currency
There might be a handful of people in the area, so they might have some useful things.
6: Radio
This will help you get signal to other survivors around you
you say 3 in beginning and 2 at the end, but if i can have 2 I’d pick food and water without question. with that i can build a fortress and never leave so never be in danger! if i got a third id take the immunity just in case i had to leave
If only two I go with infinite food and water, usually during an apocalypse are the first worries of people, having those solved I can find a place where to hide properly and stay there until a possible end or just survive
If I got three, I wanted to add the jetpack but is too much weight added, can be useful to go out from hard situations where you stuck but the weight can slow me down most of the time, I think I take the immunity (if it can be used most than once) so I can escape from zombies in hard situations without much problems.
Currency is useless, no one care about money we back to the prehistoric era
Enderpearls, if your launch is bad you gonna transport yourself very close to where you are, if you shoot it, you do not see where it ends and you risk to teleport in a worst situation than before
Radio, can be useful but is possible that no one of the survivors will have one, also in case I am sure it is possible to find some in police cars or shop, not an hard item to find
The easiest solution having infinite food and water is than steal a proper nice boat with also the sails and then live on the sea the rest of your life without pretty much never see the land again except for repairs or see what is going on on the land
You can call me Rock-a-fella 
