Keto sounds perfect for you, but the shakes may have to go at 9 net carbs per serving, as most keto plans suggest less than 20g carbs per day for getting into ketosis and becoming fat adapted (using fat for fuel versus carbs). Also, they are likely sweetened with artificial sweeteners and/or sugar alcohols, and those can act like sugar on insulin spikes in some folks, and hinder their progress.

Keto usually looks something like this in the beginning:
5% of calories from carbs or <20g
65% - 75% calories from fats
20- 30% calories from protein

These macros can be adjusted for what works for you. Some folks do better on slightly less protein depending on just how IR they are for macros that look like this:
5%C/80%F/15%P

Also, exercise is usually limited during the time period where you are trying to switch over from using carbs for fuel to fat (ketones), and many folks don't worry about calories in the beginning while trying to adapt. Also, you can take a less severe approach, and work your way down on carbs, while increasing your fats, and watching your protein intake. You don't have to go cold turkey. Depending on how many carbs you normally eat now, just dropping them to 100-150 g per day may make a significant impact. Just remember, when you reduce carbs, you increase fats. Do not do a low carb and low fat diet at the same time.

Try using this calculator to find an appropriate calorie level, macros, and deficit.
http://keto-calculator.ankerl.com/
If you don't know your BF %, use the link to pictures to estimate it.

Most of us that have done LCHF/Keto diets see incredible improvements in Fasting Blood Sugar, A1C numbers, Total/HDL/LDL/VLDL, Triglycerides, etc. Mine has definitely improved on this way of eating.

Fat is not an enemy. I know that's hard to get over all we've been told, but it was a lie. Someone will come along with links for you. I'm not really good at keeping them.

I really like this keto calculator http://www.mydreamshape.com/keto-calculator/ because I can put in my percentages from MFP at the end of the day and see how I did.

I did the high-protein diet (35% protien, 10% carbs, 55% fat) for a few months at 1200 cal/day and it was really hard to get in that much protein without going over my other macros. Then I stalled out for a few weeks at -15lbs from starting weight and started researching everything I could for ideas. The fact that too much protein could be bad for weight loss was a surprise to me too. I changed my macros to 5% carbs, 70% fat, and 25% protein and the weight has been falling off ever since. Maybe because I was relatively close on the macros before, I never experience "keto flu", but I am definitely in ketogenesis now.

Good luck!

You'll get the hang of it. And also, keep in mind that if you are consistent on those numbers and don't lose a lb per week, then you may need to adjust them. They are estimates, not exact.

If you get keto flu, make sure you drink salty broth and up your sodium intake. You may also need a potassium/magnesium supplement. And it gets better, so stick it out. It may suck for a few days to a week, but it will be worth it.

Eat ALL the fats! They are not bad for you like we've been brainwashed into believing.

I have a question about tracking net carbs on MFP. I've set my Food Diary page so I can see carbs and fiber next to each other to make it easy to calculate net carbs. What I wondered was how do you adjust for foods with sugar alcohols, like sugar free syrup?