I've been doing front squats for a long time. I can do 375 for a triple ass to grass. I haven't attempted a single in many years, but i think i could do 405 on a good day. I actually front squat more with an arms crossed position than a clean grip. I do power cleans all the time and have gone up to around 335 on a good day, but when i do front squats alone it's a lot easier for me to use the crossed grip.
It takes a long time to get the form perfect on front squats. I don't have any issues with the bar choking me anymore, but it took a long time to get the form down. The best thing i ever did was invest in a good pair of weightlifting shoes and they made a big difference in my front squat. I can go ass to grass very easily with them. I don't use a belt or wraps, just me and the bar.