These farmhouse tables are quite popular. I have made around 20 of these tables each different in there own way. I make these tables two different ways. One way (the cheaper way) is to not glue the boards together but connect them using a board underneath. This way is more rustic and does have small cracks but nothing major as I clamp the board together before attaching the board across them. The second way is where I do glue them together and it does give them a much cleaner look. It is really up to you how you want them. I could glue them together and then route a line down each board to make it look like they are separate and not glued if you would like also. You can tell the difference in the pictures between the glued and not glued.
I do any custom size as well as any color you would like. Most of these tables have been made with pine but I can use a hard wood. I usually use either 1"x4" or 2"x4" boards from menards so they are really only 3/4"x3.5" and 1.5"x3.5" but I can make the boards and width and depth you would like.
So if you like the style but want it a little different don't hesitate to ask because I can make it however you would like.