At your height an weight and a BMI of approximately 35- you are considered obese. I would not encourage or recommend any surgery without a commitment to improve and achieve a more healthy lifestyle.
Thank you for asking about your Nexplanon implant.The implant should be removed and a new one placed in a different area before your arm liposuction.Liposuction is very likely to damage and/or displace the implant.
Always see a Board
Certified Plastic Surgeon.
Best wishes - Elizabeth
Morgan...