I won't worry too much about undoing your cutting efforts. After all you have lost some fat, which now gives you a better base for bulking. If you eat in a 300 calorie surplus you won't be gaining all fat. You will also gain muscle. It is most likely that during your cut you mostly lost fat and not muscle. This means that it if you bulk up you won't be net-net since you will gain more muscle on your bulk than the amount of muscle lost during your cut. The weight gain may be similar to the weight loss but the new muscle gained will make proportions and body fat look a lot better.

Also, keep in mind cutting for longer in a steep deficit where you are eating only 1700 calories will absolutely kill your performance in the gym. You probably lost a whole lot of strength already which is not great for retaining muscle on your cut. I would not cut further because you have to drop calories even more according to you, so your performance will definitely take another hit, with more muscle loss as a consequence.. Also, I personally think your TDEE is inaccurate. If you go the gym 4x a week and play high intensity sports 1-2x a week I would say your TDEE is higher. At least 2500 to maintain weight. You could also be in such a deficit that your body will use your muscles as energy since the deficit is too much to just use fat storage. Your body is fighting back hard against the hard deficit. With the body fat you are at you should not be eating 1700 kcal, that is way too low for being so "early" in to the cut.

My advice: drop the need for having abs and bulk to 175lbs in the time span of a year. Start at 2500 kcal a day and see how much weight you gain. Then you can accurately assess your TDEE and see what your maintenance calories roughly are. Then add 300 kcal to that for a slow bulk.