1-Choose skimmer based on how much air it pulls / mixes and not on “Rating” because rating is just manufacturer’s opinion.
2-If you want LPS to thrive then you don’t want your water to be skimmed too much.
3-May be you can consider getting a second skimmer (for redundancy instead of one large one) that can be put to work in you sump in case you ever want SPS, or as a back up.
I used to have two skimmers running Deltec 650 and Cone with 700L/hr air, now I have Deltec as a back up and I have cone upgraded with better pump (
Bubble Blaster) that pulls 1200-1400 L/h of air.
http://www.canreef.com/vbulletin/sho...t=76429&page=2
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http://premiumaquatics.com/aquatic-s...-HY-3000S.html