Here’s one more suggestion with this wide wood flooring. Most people find it difficult to prevent these boards from forming gaps over the dry winter heating season. So in this case you might consider installing a V grooved plank floor instead of a square edge. The deeper the V groove the more the gap will be disguised. But the deep grooves will also be dirt and dust collectors, so be careful what you choose.
Be sure to read the section on subfloor and nails in the Strip Floor article, There are warning in this about OSB subfloors, and those lousy flooring staples. A lot of people will consider this all too complex and go ahead and just get by with what ever subfloor they have.
So remember to choose a thick plywood or softwood subfloor, beef it up if need be. Choose the unfinished plank floor for best results. You can see in the pictures that the plugs in the plank ends are very subtle, and do not detract from the appearance of the finished floor. And please turn down imploring salesman at those wood floor boutiques, when they want to sell you prefinished plank floor. it’s just asking for trouble.