http://www.cathinfo.com/catholic.php/Definition-of-Accordista-Yellow-Light-Red-Light-etcThere is nothing wrong with the non-Pfeiffer parts of the resistance. Setting up Mass locations outside the aegis of the SSPX isn't exactly schismatic.
Just remember, a priest saying Mass in a garage for 10 people has EVERY BIT AS MUCH RIGHT as a priest in St. Mary's Kansas, saying Mass in a large, decorated chapel for 500 people. Both of them avail themselves of supplied jurisdiction. Both of them have no canonical standing in the Church. Both of them are obedient to the Faith, and apparently disobedient to the current Church authorities.
If you only avoid those SSPX priests/chapels that have truly begun to change or go liberal, you should be fine. There's nothing wrong with attending a valid Tridentine Mass when you have no other options.
If your SSPX chapel isn't 100% kosher (pardon the expression), you NEED TO BE LOOKING FOR AN ALTERNATIVE especially if you have children. You don't want a softness towards Vatican II to develop in your mind, or that of your children. Otherwise you're halfway back to the Novus Ordo.
Being as the SSPX is objectively becoming liberal, softening on Vatican II, etc. and there is plenty of hard evidence for this in the past and present (who knows what will happen in the future? I don't.),
one must adopt a "yellow light" or cautious, stance towards them. Some chapels and priests must be avoided, to avoid becoming part of a cult. There are issues besides "validity" when choosing a Mass to attend every Sunday. What if it's a valid Tridentine Mass, but in a cult milieu? What if the priest is preaching the new SSPX doctrine, with the hopes of bringing the Faithful with them on their Broad Path March towards liberalism and Modernism?
If you're not WORKING FOR, PRAYING FOR, SUPPORTING, and DOING YOUR HONEST BEST to get Mass alternatives in your area (if you don't have them), then shame on you!!! Such people are GREEN-LIGHTING the SSPX which is as wrong as red-lighting it. There is a clear trend in the SSPX to modernize and soften on Vatican II. Stevie Wonder could see it. If you don't prepare for a disaster that is so clearly coming, you are responsible for what happens (namely, "FSSP Mass or nothing" in your area). You'll be one of those who can only attend a watered-down Indult, with "no other options in my area".
Well, NOW is the time to support your local resistance! Make plans about where you will go WHEN the SSPX sells out the rest of the way.