Jedi, Just my two cents because I recently went through this in the last few weeks. From what your listing as training and your stats, I to think its aggressive. I am 5-11 and weighed 175 pre test/tren/mast and for 4 weeks I was eating 1800 calories to a T and the weight flew off, scary fast to be honest. I shit you not when I tell you I approached the 155 zone within 3-4 weeks and I was actually getting worried. My goal was a cut, and even with AAS and its benifits to at least keep muscle loss to a minimal, at 155 my strength dropped drastically as well. My routine was also cardio 4-5 times a week and training 5-6 all that added up on 1800 cals was not enough. I added in skim milk and greek yogurt to ll my shakes to up my protien and calories and just that little tweek allowed me to put 8-10lbs back on in 2 weeks time. I know weight gain is not your goal, but honestly feel that my body needed it. You don't gain that kind of weight that quickly regurally which leads me to believe that my body was yearning for the extra cals. Long story short, I still see the fat melting off each and every week but i'm not sacrificing the muscle atrophy by just that small adjustment. I would assume your tdee is prob 2200-2500 based on what you do for work, so 1800 is a 500-700 deficit and thats without training, thats just sitting on your ass. Add in your training regimen and your propably feeding your body 1200-1400 cals a day when you train which just isn't enough. Yes you will lose weight, but to drastically and just like I said once I added in the extra cals, well the same applies for the end result. Say you drop 50 lbs fast when that diet ends your body will be searching for cals and my opinion based on what i've been through is that the weight will come back, not 50 lbs but you could throw on 10-15 in a short period of time once you reach your goal. Hopefully that all makes sense, but listen to the other guys, eat a little more and if your going to do 1800 only do that on off days, aim for more 2200-2300 on training days to fuel your workouts.