How much RAM do you have? swap is for too many applications all at once wanting to use RAM or for hibernating. If you do not hibernate, edit videos or start every app you have at once and have 4GB of RAM or more you may not even need swap, but some is recommended.
Did you end up with UEFI or BIOS install?
Some alignment issues reported are not relevant. All partition need to start on a sector that is divisible by 8. Extended partition does not matter, but logical do, if in MBR mode. All gpt partition tools should automatically give aligned partitions.
First, understand that most partitioning tools have moved to a policy of aligning partitions on 1 MiB (2048-sector) boundaries as a way of improving performance with some types of arrays and some types of new hard disks (those with 4096-byte physical sectors). See article by srs5694:
Post on 8-sector boundaries alignment by srs5694
http://ubuntuforums.org/showthread.php?tit's 8-sector (4096-byte) alignment - post 8
Alignment issues on 4K drives
sudo parted /dev/sda unit s print