I can only tell you that for many Christians there is simply no conflict between their theological beliefs and anything in science including the Theory of Evolution.
There seems to be two different issues here. One is your path, your journey, and the other is family relations. I will try to address both issues.
First, on your personal journey.
Other folk will likely address the science side so I will try to stick with the theological implications except to say, learn as much science as you can and understand that it will NEVER get to "The Answer", there will always be more to learn.
In your personal journey consider
the Catechism of Creation which is one Protestant view of the issue of Faith and Science. For many of us, what we learn through science, for example the Theory of Evolution, is
How God Did It. For us, there is no real problem presented by anything in science because all science shows us is the HOW.
The second issue is going to be far more difficult and that is living in the family group. That is always tough, particularly when there are basic fundamental lifestyle differences.
You describe yourself as "...an outnumbered, evolutionist, army-of-one". Well a good measure of any army is to decide what battles and skirmishes to fight. The successful army fights the ones where it can win, avoids those where it is sure to lose, and when possible disengages before major losses take place. Unlike the somewhat freer medium of exchange at a forum like this, family discussions carry higher risks. Small hurts can last a long time. Be careful when engaged in family fueds and discussions that you do not cause problems that will roll over into other facets of life.
Aslan is not a
Tame Lion