Looking at your photo i would say Coat King would work well for you along with some thinners
You may find that thinners will be the way to go on his legs front & back if you can get a pair of singled sided fine tooth thinners along with a pair of double sided wider tooth thinners which will take out bulk but leave a more natural look
Its all down to how you really want him to look smoother on his back but maybe longer sides