What are some good exercise plans to do that will make me lose stomach fat and man boobs ?

No spot reduction: There's no exercise plan that can spot reduce your trouble areas - all you can do is lose weight overall, which will gradually make those areas smaller. Sorry about that!

Sometimes, but...: You are wise in achieving a long-term stable weight. You will find that a regular exercise program and a healthy diet will go a long way in helping you achieve your goals. Once you have achieved your long-term stable weight, if the gynecomastia is persistent, surgery may be indicated. It is often best treated with partial excision of the prominent glandular tissue and peripheral liposuction.

Get to a baseline: Weight and if your gynecomastia persists, seek aplastic surgeon to review options.