You need to prioritize your goals 1st, either lose the last bit of fat or gain muscle b/c the approach for either one will be different. The hormonal environment to lose fat is totally opposite of what is required to gain muscle. That being said there is no need to do a keto diet to lose fat. It is VERY clear there is little advantage of a keto diet over others with individuals at low bodyfat, at least in terms of muscle preservation and fat loss (calorie control can often be better). Most people on this board have a hard-on for keto diets and while they can be useful, they are nowhere near as incredible as people wish to believe. Theres a lot of false statements, like raising fat intake or a 70/30 ratio of fat to protein to achieve ketosis. The fact is raising fat has NOTHING to do w/ muscle preservation, fat acts to affect hormones to a degree and as a calorie ballast since carbs and proteins have to remain fairly low in order to achieve ketosis, and fat is included to keep calories from going too low. Make no mistake, eat too little protein and tons of fat and you WILL lose muscle, the studies clearly show this. The issue of 70/30 probably comes from Dan's totally outdated book BodyOpus. This ratio means NOTHING, as ketosis will READILY develop during TOTAL STARVATION, or a Protein Sparing Modified Fast (all protein and almost no fat). The ratios dont matter, keeping carbs under 100g (most say below 30) but anything under 100 is technically keto, and protein about .9-1g per lb., will allow ketosis to develop. Fat is included to make up the difference in calories.
If you want to put some size on i'd say definitely add more carbs, and even some fat (20%) of total cals supplementing w/ fish oils. A 50% protein/30% carbs/20%f fat diet would be awesome for mass gains if you dont tolerate carbs well, including high post-workout carbs. What is more important than ratios is total cals, and you obviously have to eat over your maintenance level to gain mass. If on the juice it would be wise to keep protein high (2g per lb) If I were you though I would focus on losing the remaining fat 1st, then add size.
And if losing fat is your 1st priority Then of course calories are issue number 1. That being said I still like to know my diet ratios and the ratio you mention is very similar to mine while cutting. I dont handle fats well, nor do I handle carbs. (I've done keto and higher carbs) and was always dissappointed w/ the results. Best cutting results ALWAYS came from a very high protein, low carb/low fat diet similar to yours. With 1-2 days of VERY high carbs (refeeds) to refill glycogen and boost leptin levels.
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