D&D Online

I have been playing DDO off and on since 2005 the Builds have changed so much it is not so simple anymore to figure out a good build though there is much more versatility today I am looking to build a 3Rd life TR as a epic Dragon knight the first life was pure Ftr lvl 20 TRed lvl 16 Ftr 2 FvS 2 Monk for the past life feats what I want to know is if i decide to build a 4Th life will a Barb & Cleric add HPTS and Con and healing ? advantages and any other advantages my goal is to built a High DPS Tank that can heal it self with Past life feats added I just read about the past life and multi-class advantages to a pure class at the last life build any suggestions will help as I have had the experience that most of my builds start out great but as the DEV's change the game they don't work out latter on so I am looking for a great build for a DPS TANK and a CLERIC and a Rogue I have a Cleric and rogue 2Nd life now and will be building them next Also is it better to spend the points each level and this builds better DPS and HPTS or just lvl to 15 then spend the action points ? Thanks In game name Ganthor Blackheart