I was under the impression that salat was the prayers given to God that was more or less ritualistic. The amount of people needed to perform salat is not important. I do wish there were a wider Quran Alone group near me, but there is just me and my wife, and my wife is more Sunni than anything else.
Besides the great debate of 2 or 3 (the Wusta debate) prayers a day, I would think that Fajr and Isha would be the most satisfactory, I could be corrected by those who has more experience in Quranic study.
I know there is pressure to pray a way different from those who do not carry the same mindset. The Mrs. did not appreciate at the beginning that I would omit the tashahud because I feel my prayers should be focused on justly me and God, as noted in (2014). As much respect I give to the Prophet Mohammed, it states
"I am God, there is no god but Me, so
serve Me and hold the contact prayer
for My remembrance."
- Quran A Reformist Translation
Besides that point, you may perform salat yourself at times that is suggested in the Quran, which is solidly known amongst all communities as Fajr and Isha.