If you don't want to deal with S4 then I would suggest GW stacked with LGD.
GW is the best out there as far as fat loss and increasing endurance. It will also lower cortisol levels.
LGD is a great SARM for gaining lean mass.
It sounds like those are your goals. This is how I would set it up:
Weeks 1-12
GW 20mg per day
LGD 10mg per day
PCT - a bottle of HCGenerate ES
I would get the GW and LGD from sarms1.com and the HCGenerate ES from n2bm.com
As for diet I really like carb cycling. It is basically where you eat more carbs and therefore calories in your harder training days like back and legs. On lighter days like arms you would eat low carbs.
Or if you just want to keep it simple and cut then just be in a 500 calorie deficit every day.
You can use a TDEE calculator to figure out your maintenance calories and myfitnesspal app to track your calories.