That is the way to do it. When using the stock ht cam I think the best all around stroker combo is revolving around the 3.875 stroke. Anything bigger is asking for more fitment issues and more block cutting and camshaft clearance problems etc. I did one 4 inch stroke in a stock blcok at 440 cu in several years ago and I would not do it again, unless someone paid me a ton of money.
Ed