Option One....
Hands down Option One....
Time to put your big boy pants on ....you know this religion has its own game rules, seen much of it in action too....so play it without remorse enabling you to exit smoothly.
They trust you so your ahead in this 'game' already....
Every young man has to strike out, your parents (esp your dad) know this .....so talk to them about this very natural transition. Figure out the cost of living in your area, talk to your dad about one day having a wife and the financial obligations a family brings......thus naturally the need for a vehicle of your own will become obvious, so will finding a sustaining job and whatnot
Perhaps also bring up technical school .... as that is an acceptable venue (from their you can pay your way through college of your choice).
As you start on the journey to independence your parents will discern your need to cut back some on FS; so the biggest thing is to maintain the appearance of zeal....
Until you leave....
Publications need to be highlighted/underlined/notated in the margins
Shoot for 2/3 comments per meeting
Highlight one article point per month to your parents as being significant
Do half real FS (ie been seen) and fudge the rest.
Make yourself available for assignments and appear the normal 'reaching-out' stuff.
Play the game, play it well.....the more cover you create the less suspect your actions are...
Grown men have to know how to set a course, execute that course and maintain it until it takes them where they want to be.
Be stable, predictable and reliable.
Grin and bear it...but take pride in watching your plans and goals take shape and become achieved!
Know that you 'taking the lead' in your own life is going to make some girl swoon (not sure if that Sister from a year ago is still a possibility)