LBZ DPS5 AutoCal question.

Hello, Im a rookie with EFILive.

Just purchased AutoCal v3 with PPEI tunes and DPS5

Questions,
1-Do I install tunes before or after installing the DPS5.
2- With DPS5 I'll never use level #5 (+200hp), can I use one of the position for stock tune mode?

Maybe to have this setup-

Level 1: Stock
Level 2: +30 HP
Level 3: +60 HP
Level 4: +120 HP
Level 5: +160 HP

You will need to work with PPEI to adjust what each level/switch position does, only PPEI can build or update your tunes.