There is so much I would like to share and give background, etc. but it's very late and I'm ready to rest on my journey for the night

Very brief background, I am 33 and married with 4 children of which the youngest is almost 10. At the age of 15 I began exploring Orthodoxy and put it on hold, as there was no local Orthodox influence aside from a high school teacher who introduced me to it - back in the days before internet and Ancient Faith Radio

December 2009 was the time for seeds to begin sprouting in my life. I feel like I've been a sponge for all things Orthodox for the past 10 months. There are about a dozen parishes "around", but none closer than a 60-75 minute drive. My family is supportive of my learning and explorations but not interested enough to join me, so actually going to a local DL weekly brings disharmony to my family.
As to not become isolated and completely separated from Godly people, we continue to go to our evangelical/non-denominational church in addition to my going to an Orthodox church every 2-3 weeks.
Here's where things get tricky. I presently serve in our church with the children's ministry. A couple times a month I help out. From time to time I assist-teach as well. Especially with kids I haven't had a problem presenting Biblical truth in such a way that I don't feel I'm betraying scriptural truth according to either tradition (though I acknowledge this does nothing to promote Orthodoxy). I feel that "slipping" anything Orthodox in would be wrong as it would only bring the wrong attention to Orthodoxy.
So my problem is this, having to seemingly straddle the fence - I'm sure not a new problem for those considering conversion, but this particular matter I didn't find a similar thread on. So after that "brief" background

here is my question...
With no local expression of Orthodoxy, is it permissible for me to continue helping out in my local non-denominational church?I am a "bridge builder"/peacemaker in all I do, so emotionally I've had no problem existing in both worlds and at least understanding all sides without feeling like a hypocrite. I know where I stand and my Orthodox practices in my personal life and faith have only made me better in all I do including my serving at our evangelical church. I do not partake of "communion" there either. In my own debating I've come up with the following list of pro's and con's and would like to hear the thoughts of others on this...
+ The church is very oriented to doing good and helping people not just singing in a circle about Jesus' blood
+ I get to actually do something good with people who love God and profess Christ
+ My family is around a Godly and loving environment
+ I feel called to serve and to have nowhere to serve would feel like death
+ Gives me practice at living Orthodoxy internally for people to SEE the results
+ Being challenged with non-Orthodox viewpoints sharpening and honing my faith and keeping me "on my toes"
- The obvious: they're protestant / I'm ... not ... anymore.
- Possibility of "living Orthodoxy" turning into hiding my Orthodox faith
- Having to be careful to not be defensive if/when challenged on my Orthodox beliefs and presenting Orthodoxy in proper light
If a local parish existed, of course I would put my energy into helping there, but without one I feel my life would stagnate without helping somewhere... Sorry for making such a simple question so complicated

Thank you all,
Tim