Confused about how much I should be eating? Am I eating too little?

Alright...according to Tom Venuto's BFFM e-book, the formula to get your BMR is:

lean weight in KG X 21.6 + 370

I'm 64.4kg and 29.5% body fat, so my lean mass is 45.4kg, and according to the formula my BMR is therefore 1350.6.

I walk around 10,000-11,000 steps a day, every day, and lift weights twice a week. I eat 1400kcal on days I lift (2 days a week) and 1350kcal on the other days. My protein intake is around 60-65g a day. 

Am I eating too little? I'm not sure what my activity level is? I work from home so the only way I get to move around is to walk...and I have a pedometer clipped on me, so I make sure I walk around 10000 steps a day (that's around 5 miles I think?), I do my walking out in the yard or inside the house.

My goal is to lose 1-1.2 pounds a week. Please help, this is confusing.

You should try using the CC calculator function on this site.  It depends rather on your height, total weight, age and activity level.  I calculate, for example, that if you're 64.4kgs, 5'4" and 25 years old and your activity level is 'light' (10,000 steps a day) then you need 2050 cals a day to maintain your weight.  If you were taller or younger you'd need slightly more calories... shorter or older, you'd need slightly fewer.  In this example, 1500 a day would get you going with weight loss.  1400 sounds find, therefore.

Thanks gi-jane :) I'll keep my calories at around 1400 a day then! I was afraid I was eating too little...I'm not in a big hurry to lose weight, though I'd like to be able to see small changes every few weeks...I was eating at 1300-1350 a few weeks ago, and lost 1 inch off my tummy, 1.5 inches off my waist and half an inch off my hips and bust just a couple weeks later...I was really thrilled...but I was afraid of losing muscle mass as well because it happened so fast.