Employment based green card is taking much longer than pre covid times. The PERM step alone takes 18 months to 2 years right now and DOL is not showing any signs of improving the processing times. After PERM the i140 and i485 takes around 6 to 12 months depending on your luck. The overall process takes 3 years from start to finish. Talks of recession is making companies layoff thousands of employees and its gonna get worse so I think marriage based petition is best at this moment and a safer option too.