Query on SP levels

Hi All,

Iam using PI7.1 with SP 4 and now they have planned to raise the level from 4 to SP 10 .

All my interface involves MDM7.1, ECC ,BPM-PORTAL systems.

My query is ,should the PI to be installed with SP 10 level or EHP1 PI 7.11 should be installed so as to achieve the above stated scenarios?

Thanks in advance,

Lavanya.