<My first dip into tertiary skills is SMC, as I figured if I can get the 24 ranks done, I never have to think about it again.>
You might as well go ahead and get 25 ranks in SMC to get access to MANA SPELLUP once a day. If nothing else, it comes in handy after dying.
<My only concern (if it is one), is that I'm converting a TON of PTP to MTP, which is not something I've had to do with my paladin, so it just feels off.>
MOST characters convert training points one way or the other, usually a lot. It might seem a bit disconcerting, but it's nothing to worry about.
You shouldn't have too many troubles with your training, Rangers are pretty hard to make unplayable compared to some other professions. Though, the lack of any training in Combat Maneuvers will hurt you when you start hunting critters that use them. No matter how good you get at sniping, you'll always fall out of hiding occasionally.
Lastly, there really isn't a whole lot to be gained from 1x in both FA and Survival if you only have them for skinning (both of which I would consider to be more tertiary skills then SMC is). As long as you're casting 604 when you skin, you shouldn't notice much of a drop in skin value if you only have one or the other, so if you need TPs for anything else, this is where I'd get them.
Starchitin
A severed gnomish hand crawls in on its fingertips and makes a rude gesture before quickly decaying and rotting into dust. A gust of wind quickly scatters the dust.