I can be your reality/fact check.
1. Albedo effect - Probably minimally effective because Mars receives much less solar radiation in the visible and IR spectrum than Earth and its poles are at high obliqueness to the Sun most of the time. Also its thin atmosphere probably does not conduct or convect nearly as effectively as Earth's. On Earth most of the atmospheric heat transfer is done by the oceans (why the UK isn't as cold as Scandinavia) Its winter and summer polar caps also vary greatly which reduces yet further the magnitude of effect removing the winter frost.
2. Perfluorocarbons - Might want to check how stable they are under high ultraviolet and ionizing radiation. Both of which are more abundant on Mars than Earth.
You might want to recast your plot and conflict as between a group who irrationally (perhaps with a religious "mission from God" undertone) wants to "terraform" Mars even thought it is known/accepted that it won't work vs. those who either don't want to try or change it to either "preserve" Mars or simply want to get on with the business of strip mining it for resources. You could even have an unholy alliance of industrialists and "green party" (reds? oranges?) type activists. This would make it more realistic scientifically, and also allow you to make commentary on current terrestrial events.
Then you can have a plot twist where the "terraforming" DOES work better than anyone imagined, but wakes up a dormant Martian microorganism that is pathogenic to Terran life, takes over Earth, and annihilates mankind. That's if you insist on playing along with the cliche Mars theme.
LOL