D&D Online

I finally have my first toon ready to heroic TR. I know that there is a comprehensive guide on "how to" TR, but is there any such guide that covers the strategy of the process? Should I have a final toon type in mind to plan for this TR and future? Should I continue further into epic and epic TR? FYI - my toon is a human 18 ranger/ 1 rogue/ 1 fighter that fell into the dex based trap, although seems to work fine for most heroic quests. +2 and +3 tomes for all abilities, but dexterity which has a +5. Currently using the Shiradi destiny path. Mostly a solo player (part of the reason for the rogue splash), but have run with a few PUGs. I have a nice variety of scimitars and bows (vorpal, disruption, banishing, smiting) to use based on the adventure. I was thinking of TR into an elf ranger to take advantage of the dex, but I know that the damage support for dex is not there, so I'm not fully commited to that path. If I would have to pick a final class, I think I would want this toon to end as a ranger.