“But if I wanted to join full time, they would expect me (and rightfully so) to dress the part. Wife and kids too.”
Correction: Wife and kids only. Satmar never stressed levush for men. There are Satmar chassidim with felt hats, beaver hats, tall hats, wide brims; long frocks, 3/4 length, short jackets; full beards, trimmed beards, even no beards; shtreimels, no shtreimels, etc. Satmar only stresses yiras shomayim, limud hatorah, tznius, shmiras einayim, chessed, tzedaka, emunah and anti-Zionism.
A Mizrachist who was “converted” to Satmar rov’s shita on Zionism thanks to the sefer Likutei V’Yoel Moshe, asked the distributor of the sefer what he has to do to become Satmar. His reply was: “Nothing. Just be an ehrlicher yid.”