Looking for some help please. I am a retired E7, 20 years active, retired in 2000. I am also 100% T&P VA. Currently a DoD civilian with 23+ years and looking to retire in the next 18 months or less. 62 in OCT. I have been approved CRSC at 70% which is about $500 less than my retirement pay. If I accept it, can I buy back my 20 years and add it to my civilian retirement to give me 43+ years as a DoD civilian? If I do buy back, is there any items that will cause issues? I also have a reconsideration CRSC request in due to being diagnosed in April with CLL Leukemia & being issued hearing aids in July. Thank you.