If your aim is to lose weight, alcohol is better avoided but it's fine for weight maintenance. The posts explain why exercise should not be primarily used to "burn calories" so eating before/after is mostly determined by how you feel and whether you are hungry. Chickpeas and quinoa are not suitable because of their high carb count.
Also, people gain back a lot of weight if they no longer follow the diet. “Studies looking at this diet solely for weight loss do seem to indicate that it’s helpful. However, there aren’t any studies about what happens when you come off the diet or examining the side effects of the diet,” she told Healthline. Experts aren’t sure due to the lack of research on long-term keto dieting.