sorry bro. its not gonna be easy to recover that hard of a cycle and 15 weeks is a long time. usually i like to stay 12 weeks or less, makes for easier recovery.
i recommend unleashed since you feel like shit in the gym. it will give you an extra kick in the ass. also post cycle and hcgenerate should be run. read the directions for PCT on the products.
yeah i would take clomid.. just 25mg/day... drop the nolva, doesn't mix with deca. in fact deca isn't for everybody, i have no problem with it but i am in the minority
i think you should stick with natural stacks until you are 27, as should everyone. no reason to mess with your hormones until then.